Just rolled 5 warlocks. Only up to 12 now, I'd be higher but I'm at the hospital now (wife had surgery). It was nice steamrolling hogger at lvl 8

Its quite nice running along and hitting things with one or two DoT's without stopping, let the imps blast em with 5 fireballs somewhere behind ya while you're DoT'ing the next mob.

Just finished the voidwalker quest so now I have to go turn it in. I think I'll only use one or two voidwalkers though. Don't see the sense in using 5 tanks while questing. I'd rather have imps blasting fireballs.