The main problem I see with that is that there's no layer of fabric or leather between the body and the gun, other than whatever underwear is worn. Sweat could be an issue, and so could the simple fact that your body is so close to the gun, and all the little corners and edges that could spell discomfort.
For me, the answer is a UBG Striker with a sweatshield, as worn below. Click to enlarge.
p-t-max
I'm no expert, I'm just, well---opinionated!
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