Glad you got some solid answers !
I've got a 442-2 Airweight with a Crimson Trace grip and it's annoying because the recoil from the first shot rotates the button out from under my middle finger to between the middle finger and the ring finger, which requires adjusting one's grip for the second shot. I got used to it and can re-position quickly, but I wish CT had made that button bigger. I tried a silicone rubber glob on the button, which works, but the glob does not seem to stay on the button. Yes, acetone degreased before applying the silicone.
Kind of a dealable-with problem; don't know if CT has corrected this or even recognized it as a problem.
Terry, 230RN