I've done a fair number for myself and others but man, the wear and tear on your elbows from cutting checkering is brutal. I'm pretty much not doing it on any guns I don't personally own and want to keep forever now.
Although I did get a small milling machine recently, so I may go back to doing it once I get that set up.
Precisely my policy on hand checkering as it is an arduous job. It is worth the effort on a special gun as you say.