No I don't. I don't use a top coat all the time, when i do, it is the most indestructable top coat availible anywhere... Super pricey too! Most if not all of my colors come out hard and glossy, so a top coat is never really needed...
Gotcha..I have been getting into painting some casting spoons. I have a real cheap air brush set up and only use acrylic paint. I'm looking around for a decent clear coat. I know for sure my paint wont hold up. Your spoons are pretty damn cool! Good luck with selling some.