So what was it like pointing an unloaded gun at another human being in a calm, controlled setting?
Listen. I can't tell if you are being sarcastic or if this is a legitimate question? So, I'll just answer it this way and leave it alone. For me personally....it didn't "bother" me one bit to point my gun at one of the instructors and vice versa in this environment. "We" all made conscious decisions to trust one another and we were all very adult about it. I can say that it will certainly raise your blood pressure and the training scenario works for it's intended purposes.
Here's the deal.....if someone doesn't agree with it, that's fine. They don't have to participate and/or they can chose a different training group. That's what makes the world go around. That's why there are Ford, Chevy and Dodge trucks and not "one" truck for all to choose.
Once again, for me personally, I would recommend Marshall's training classes over any other that I'm aware of or have attended....hands down. I will also be attending his Pistol Level 1 for the second time this spring, followed by his Level 2.