I consider them more pose-worthy than play worthy, just because with the excessive handling of play the paint is guaranteed to come off. even factory paint rubs off with play.
I don't like to use sealants, I prefer to just sand down all the joints, first with a dremel and then with sand paper. that eliminates joint rub, and although you can't eliminate joint wear and chipping 100%, reduces it significantly where it isn't much of a worry.