I just received my first one, and installed it on my 19-3 2.5". It feels great, but I noticed it left some faint marks on the grips (nothing on the metal). I am not terribly concerned as while it is in very nice shape, it is not flawless, but it does raise some questions. I see people post pictures all the time on here of very fine and rare guns with Tyler Ts or other types of grip adapters. Surely they must leave some evidence of their use. Do people just accept that the gun will show a little more wear, decide they will never remove the grip adapters (or never sell the gun) so it doesn't matter, or just haven't thought about it?