Thanks guys, two stunning examples - my big worry with vinyl is that it might like cheap/phony, but both of those builds have used it exceptionally well and ooze class. The "Blackjack" SG looks pretty good without a clear coat, so that's always an option, and it seems like the Paisley Jazzmaster took a burst coat and clear coat without any dramas. I think I'd probably want to try it on a guitar with a relatively flat top though, so there's a very distinct line of where to stop.
It certainly shows it can be done to *great* effect, so I think I'll definitely have to give it a red hot go.