I don't carry a compact like the Glock 23, because my hands are the size of meat hooks, and a compact just doesn't work for me. I carry an XD-40 4" in a Sidearmor IWB at 4 o'clock. I wear a tight A-type undershirt and a snug black or grey T-shirt, with an Oxford dress shirt open over that, just about every day. People just think that that is my "look". The gun goes between the undershirt and the T-shirt. With regular practice, the draw is seamless. The extra layer makes concealment absolutely reliable, a high priority for me. For the first few days using this method, I asked for my wife's inspection, lean over, wrap my arms around and the whole thing. She could not tell that I was carrying, and she clearly knows my body better than anyone. And you will get used to it. After a week or two, any sense of physical discomfiture will be completely gone.