I have Don Collins Ivory Micartas on a 686 snub, and his aged Ivory Micarta on two Js, a 640 and a 649. They will scratch, but can be buffed back with little effort, and are as sweatproof as the guns. NICE looking. He also makes grips from Corian (DuPont countertop material). Put a black set on my .45C MG. Spooky stuff! Dense, works easily, and can be buffed to a fare-thee-well. When buffed out, it reflects light along the edges of the curves, but in the center is dead, total deep black - blackest stuff I've ever seen on a gun or knife handle. Terry Primos handled a small Bowie in Corian from Collins, and the set is spectacular.