Hey there,
I bought a pair for a couple of my Single six's along with a scope rail. They make my Single Six feel like the Houge on my 1911. Nice spongy grippy feel.
Not my thing though... I'm a traditionalist, and like the feel of real wood. If you're interested, I'll sell them. They're in my lockup somewhere amongst a ton of other stuff that I've tried; but didn't work out for me...
I've even had one on my Super Black Hawk .44 Mag. That was worth while. Nice fit to my hands, and helped immensely with the recoil.
Hope that helps,
w.w.w.