You'd have to be high as hell to ever carry the RPG over, haha. I wouldn't use that option anyways (less challenge XP to progress you to the next prestige with your favorite weapon).
Speaking of which, presitiged yesterday and am at level 30. Gonna try to complete the Campaign for a second token this time before doing it again.
Goddamn, saw someone with a second prestige at level 20+, what the hell...