I assume you are referring to putting wood grips on a carry piece. I have a large drawer in my shop filled with expensive wood and faux stag grips that I have purchased for my J-Frames. After dropping my 637 twice and dingng it while trying to transfer it from my pocket to my trunk safe, I ended up going back to the S&W rubber grips. I have the boot grips on the 637 and 317 and the "extended" grips (Standard) on the 60,640, and 642. When your hands are sweaty or wet from rain, you are suddenly reminded why the guns are issued with those ugly black grips. You can actually get a grip on the gun. I have often wondered what would have occured if I would have tried to "fast draw" that 637 from my pocket in an actual fight with wet hands. I probably would have lost the gun.
I may put the wood grips on for "BBQs" but they will sport rubber when I am EDCing. Just my experience.