Haven't worn both, but have handled both. Researched both extensively before buying the MTAC. Likek it a lot.
I was leaning to the comp tac, because of the changable shells(diff guns). They didnt make one for my gun.
So I got the CB. Very comfortabe, well made, fits my gun like a glove.
I will probably get a Comp tac to see the difference.
A pure kydex holster is faster. Thats my biggest issue with the hybrids.
I have several Crossbreeds and LOVE them. Have not tried the MTAC, but it is probably really good as well.
Like many others, I have the proverbial "box of holsters" that are never used. Crossbreeds were the only ones I didn't find a reason not to carry.
I recently obtained a Milt Sparks SS2, and it may be my new favorite (and that is saying a LOT). However, it is not tuckable.