I think that Ian has the most accurate question. Trying to paint anything over a vinyl covering is just a lead-in to disaster.

But I have had success using some of the epoxy paint over plastics so its not to say it cannot be done

Anthem: AVM60, Fosi DAC-Q5
Axiom: ADA1500, LFR1100 Actiive, QS8, EP500, M3, M3comp, M5