Just killed him with a 66 necro and healer merc. Was able to kite him away from the Stonemight goblins no problem, I don't think he summoned me once until I got him near the Gorukar Mesa zoneline. After that, he summoned me maybe twice.
Hits for about 2k, killed the pet in under 5 seconds. My HP bar once went from full to 26% instantaneously. Death Peace is the only reason I survived. He only conned level 67. Massive undercon.