I eagerly look forward to some replies on this as I've also been contemplating some checkering work. I really haven't seen where anyone has tried to tackle this or have it done to their CZ's.
I'm planning to give it a go myself on a Star BM that I'm refinishing. It's already got a mucked up trigger pin that I simply cannot get to move so I figure there is little else to lose if it doesn't go so well. I'll practice on some plain stock, obviously. It looks like the Star frame has enough material thickness to work with and it also has curves similar to the CZ so anything I learn should be entirely applicable. I think that the contours of the front and back strap make it more difficult than something like a 1911 with flat mainspring housing. I'll see how the practice piece goes to determine if it even seems possible the way I have it envisioned.
I rather think that it may be a very expensive proposition to have it done as a custom job. It certainly looks to require a lot of patience and generous amounts of elbow grease! Whatever you come up with I wish you luck.
