Vinny is hungry.. If he can't take you down or strike with you then he's going to pull guard, it's always awesome when a fighter has that ability and encorporates it as a plan C, the only problem is not that many guys can rely on fighting off their back in MMA. Vinny is one of those guys, Maia used to do it (don't know why he doesn't anymore, he'd be alot better IMO), Palhares does it, Werdum can do it.. Paul Sass even uses it as a first option!
As long as Vinny is confident I think he'll do well. I've heard his wrestling and striking have improved a lot which is very good to hear so it's time to see if he can put it all together.