Yes it's a good weapon (even if it would be better on a 1 hand weapon >_<), but i dont see where you could need the 50 interrupt (yes it's 5%, not 50%). I mean in most cases you dont feel it (@Giit if you were not interrupt 50% of time, the staff did nothing to help you, you were just lucky).

If the goal is to boost your recup and your stoneskin (i dont think you can get a new tier of protect with it), then like Rofellos said you can do better with a weapon which already have VIT on it.