Yeah you never know behind closed door. If I had to describe Domi, he's a bit of a punk ass. I mean I like physical players as much as the next guy, but when Domi was on Columbus, he did some real, real stupid shit (on the ice). Can get pretty damn dirty too. I remember Foley ranted against him during a game because he gave up on a play and the Hawks scored.
When Domi was in Montreal, he was better (EDIT: Domi actually went to Columbus after Montreal). I don't believe he had many problems while with Carolina but could be mistaken.
So my point is, don't be surprised if Domi does something stupid/dirty and results in a horrible penalty at a critical time in the game; or if he lollygags defensively. But he will hit, he does fight. He's a much dirtier pest than a guy like Shaw. He makes sense for one-year and he can take attention off the young players being targeted.