I currently own, carry and shoot a G23 in .40, and was interested in the 10MM. The G23 fits my hand so well that I am reluctant to get anything larger... but I really would like to carry something with a little more punch when I am out in the forests and deserts. My problem is when I handled a G20, I didn't like the thickness of the grips. Is there a slimmer version of the G20 available that is closer to the grip dimensions of a G23? If not, is there some kind of modification that can be made to accomplish this?