Leo, I would love to hear how that goes. I've tried to introduce more flavor and theme to the mafia group I GM on Tuesday evenings, but they're not the kind of gamers that go for it. They're much more interested in the game itself. It's actually starting to become a bit of a problem because the regulars know each other so well ("I think Bob is a werewolf because every time he's a wolf, he always puts his card under his chair instead of holding on to it." "I think we should kill Anthony first, he's too good at the logic of it, and if he is a wolf, he's dangerous.").
As much as if love to get everyone roleplaying, I'm not sure it's going to happen with my people, so I'd love to hear about someone's game.