Sorry: Its just when I read people saying that when you reholster it won't be under stress I get really 'stressed'. My son is a cop and has been for a few years. He's been through two academies, one very tough. I've watched him handle firearms for 10 years. I MIGHT trust he's fine with AIWB.
Train hard - yes. It won't replicate drawing on a human target. Just something to keep in mind reference the OP.
BTW - I don't know the training or background of anyone on here, so this is NOT meant to label anyone or condemn their choice. However, AIWB seems to be very popular these days, and I don't think many people have thought through it completely. Also BTW, my son has considered it, but considers the risks too high. Again, he's about the best 'gunhandler' I know.