I have 20 year old vinyl trim on my RV-6. It is holding up well.
Given the corrosion we've seen under Van's blue plastic, I would 100% prime an aircraft with an epoxy primer before I wrapped it.
On the RV-10, I'm considering using vinyl for some of the larger trim color areas. Those areas will be fully painted the base color before any vinyl is applied.
2001 RV-6 N46KB