Fun stuff! Last weekend I did run into him, but I was with my Sorcerer and she literally stomped the floor with him. Just throw 3 hydras down, chain lightning and kite him around a pillar and easy peasy, lemon squeasy. Dropped 2 Legendaries so that was nice of him. My barbarian would've been in the fetal position for a week.
i certainly ran into him...and wasnt thrilled by it...i hated him
He spawned for me during the first beta weekend. He runs super fast so good luck staying out of his melee range.
So... thats the thing that deleted me while I was leveling up on the close beta... I guess that explains all
ran into him in both closed and open beta. both times the end result was the same, him dead and me with fat loots.