I dunno, my first experience with ToB was a game with two Wizards (both blasters, one of them a gish blaster... yeah, that level of optimization), and one character who was a multiclass Paladin / Monk.

Nobody really knew how to break the game, and the two ToB characters didn't cause any particular rancor.

So, my experience says that even in a low-op game with people who generally don't know what the heck they're doing, it's possible for a ToB character (or two, as was this case) to not stomp on everyone's feelings.