[Erydan Ouragan]

Not only feasible, but great. Several reasons:

1: Dots not stacking is fine. At lower level it sucks, but at higher level, solo necros don't use all their dots. So one can snare, the other fears, one stacks boil blood line and poison line, the other stacks heart flutter line and drain dot line. That, plus 2 pets, would almost be too much damage.

2: Both necros can transfer their hp to the other and dispel the debuff it gives in the first buff slot, meaning both get the hp regen without losing the hp.

Necro/necro, necro/shaman, necro/druid, necro/bard are all viable duos. Necro/druid is great because of all of the added utility like regen, SoW, heals, buffs and ports. But deep in a dungeon, when shit hits the fan, both necros can FD and reset. Druid has to evac/gate.