Sweet, another Sig owner! Man their guns are like crack to me. I would highly recommend checking out Nill's grips: http://www.nill-griffe.com/ They are some of the nicest around for Sigs from what I've seen.Great looking grips. I'm looking to add wood grips to both my P229 & P220 in the future.
Not sure about commercial grip makers but make sure that the wood blanks were stabilized (soaked in an epoxy resin under high vacum till all the voids and cell structures are filled with the resin. It increases the weight but the wood will never crack, dry out or shrink). It also allows the grips to be made thinner without sacrificing strength. The same process is used for custom knife handles and scales. Do a search on ebay for "burl scales" or "burl grip". Lots of nice 1911 grips there. SIG grips are a lot tougher to makeI was curious about that as I've heard stories about it before. Any ideas if anyone makes some that won't crack or split?