Here's another vote for Paul at designergrips.com.
Lots of Kevlar backing in his grips and I've got mine snugged nice and tight. And they've yet to loosen up like the originals did after a session at the range. I don't know for sure but I suspect grip loosening led to the big crack on the left side original grip.
Whatever. Botton line, I got a nice set of ivory colored grips and they're a nice contrast to the black paint. Classy look for a sweet shooting pistol.