I friend of mine uses him on the CN server... he wrecks. He is pretty tricky to fight, because you need to watch out for his passive. If you kill him and are unable to counter his death seal will most likely take someone with him. He also gives you a free Enma (and I don't know if the CN version is different, or just the clone/summon is, but his Enma seemed to do ALOT more then my stand alone Enma on our version).

Anyways, I can't speak for how he will be here, but I have no reason to believe he won't be good. I would not look forward to someone running the 1st and 3rd Hokage with Iruka....