I'm only making soft plastics.. actually the painting of lures is just a hobby of mine. There's several guys already in the customer lure painting market and that's way to labor intensive for me.
As far as my epoxy top coat holding up.. it was devcon 2t. Over time it yellowed and we fish with a lot of white and bone so that's not too great. As for hardness it's very hard but like I said, my subcoats failed so with trout teeth and sharp as trebbles they will eventually chip and crack and havn't lasted too long. Some of the custom paint guys are using Automotive clear and I can tell it's hard enough. But I havn't liked their work so far ... so I figure I'll do my own or for a friend or two, and some muskie baits for the fall as well.