If you go to the Hogue website, there are several pictures of their different wood grips on the SP.
I too wanted to change from the Hogue rubber to better looking and smoother (less grab on clothing) wood grips. So I got some Hogue Goncolo Alves, smooth, finger grip. Problem was, they ended up being too smooth for me. Just didn't feel I was getting a good enough grip when retrieving it from concealment. So the rubber grips are back on (the wood set went to a .22LR SP). As an option though, you can get the Hogue wood grips with checkered sides - this should help some. So if you like the fit and feel of the Hogue grips - there are some options.