I carry a few guns with no controls on them (Kahr K9, G19, used to own an M&P 9c, etc...). I've carried a sig P6 and a CZ P-01 with a decocker and no safety (so basically D/A first pull is your only safety).
I've carried 1911s and S&W 3rd gens with safeties "locked and cocked".
The difference is what you're used to. If you can effectively draw your weapon and defeat the manual mechanical safety, then by all means... do so.
If you can draw your weapon effectively and remember that your first trigger pull is Double Action and much stiffer/longer than the follow-up single action trigger pulls... do so.
If you have enough discipline to carry a gun with no mechanical manual safety, then do so.
Here's the deal - don't confuse any of the above (I'd actually advise against carrying different types of the above categories unless you're sure which gun you have and can remember what to do differently each time).
The glock has a firing pin block safety, so its not going to go off when dropped. Its got the "double-trigger" so the trigger isn't going to fall back accidentally unless you pull it with your finger (or something goes up against it should it not be in a holster/case). That's the key - I wouldn't store any gun regardless of safeties, or action type (and regardless of it being loaded or not) without it being in at least a soft case or good holster.
But I understand some folks still don't feel comfortable with a lack of a manual safety (even though I don't agree with it, I understand it).
I would advise against carrying with an empty chamber. That requires quite a bit more effort before a shot can be made and if you're primary purpose for carry is self-defense, then you don't really want to have to take the time to rack the slide if you have to pull it under pressure.
The M&P and XD both offer manual safeties (I think the XD Compact does, not sure) and are proven weapons. If you're comfortable carrying one, then I would train well in the act of defeating the safety in the appropriate way and stick with just that method of carry.
Another option is to go with a DAO gun that has a stiff trigger pull - that works for a lot of folks who have that same fear of A/D (or N/D). A Smith J-Frame is a good option in this case and is very light.
Whatever you get - practice and train with it enough that you draw and present with enough experience that you don't have to stop and think about what you're doing (that's the danger in folks who go from a no-manual-safety gun to a gun with a safety - you have to remember to defeat the safety in a timely manner under pressure, or you could get killed).
I won't knock Taurus, but I wouldn't get a Millennium for carry. The 24/7 has proven itself to some degree, but the compact models of 24/7 are new enough that I don't even know that I would get one for a year or so until others have put them to the test. The Millennium's have a bad reputation and everyone I've ever known who had one had at least 5 malfunctions when shooting them through the few hundred rounds that the average shooter fires a gun - that's entirely too many.
Your Glock is extremely reliable, I wouldn't step down from what you have.
Just my Opinion.
I've carried 1911s and S&W 3rd gens with safeties "locked and cocked".
The difference is what you're used to. If you can effectively draw your weapon and defeat the manual mechanical safety, then by all means... do so.
If you can draw your weapon effectively and remember that your first trigger pull is Double Action and much stiffer/longer than the follow-up single action trigger pulls... do so.
If you have enough discipline to carry a gun with no mechanical manual safety, then do so.
Here's the deal - don't confuse any of the above (I'd actually advise against carrying different types of the above categories unless you're sure which gun you have and can remember what to do differently each time).
The glock has a firing pin block safety, so its not going to go off when dropped. Its got the "double-trigger" so the trigger isn't going to fall back accidentally unless you pull it with your finger (or something goes up against it should it not be in a holster/case). That's the key - I wouldn't store any gun regardless of safeties, or action type (and regardless of it being loaded or not) without it being in at least a soft case or good holster.
But I understand some folks still don't feel comfortable with a lack of a manual safety (even though I don't agree with it, I understand it).
I would advise against carrying with an empty chamber. That requires quite a bit more effort before a shot can be made and if you're primary purpose for carry is self-defense, then you don't really want to have to take the time to rack the slide if you have to pull it under pressure.
The M&P and XD both offer manual safeties (I think the XD Compact does, not sure) and are proven weapons. If you're comfortable carrying one, then I would train well in the act of defeating the safety in the appropriate way and stick with just that method of carry.
Another option is to go with a DAO gun that has a stiff trigger pull - that works for a lot of folks who have that same fear of A/D (or N/D). A Smith J-Frame is a good option in this case and is very light.
Whatever you get - practice and train with it enough that you draw and present with enough experience that you don't have to stop and think about what you're doing (that's the danger in folks who go from a no-manual-safety gun to a gun with a safety - you have to remember to defeat the safety in a timely manner under pressure, or you could get killed).
I won't knock Taurus, but I wouldn't get a Millennium for carry. The 24/7 has proven itself to some degree, but the compact models of 24/7 are new enough that I don't even know that I would get one for a year or so until others have put them to the test. The Millennium's have a bad reputation and everyone I've ever known who had one had at least 5 malfunctions when shooting them through the few hundred rounds that the average shooter fires a gun - that's entirely too many.
Your Glock is extremely reliable, I wouldn't step down from what you have.
Just my Opinion.