I have a 637-2 2" which has factory S&W branded Crimson Trace grips. They work well, even taming the occasional +P's. Bought a 60-15 .357 3" with the sharp factory wood grips. Put a set of regular Crimson Trace on it, found +P's are ok, and .357 still is a bit too much, but it is a "light" gun.

Double-action on both is so smooth. The 60-15 is my "bedroom" gun, just waiting, forever, I hope. The 637-2 is my "if I need to carry" piece, easy to holster or pocket, depending on the situation, even with the exposed hammer.