Originally Posted by
Apatheist
Don't really need to try it to see how it would perform. It would be decent in small scale PvP and bad in large scale PvP and PvE.
Multiboxing PvP is all about burst damage. By the time your DoT's tick enough to do a considerable amount of damage half of your characters will be dead if you're fighting an equal number of more of competent players.
In PvE you have no AoE damage and you'll have to fill your bags with water to clear dungeons since you'll be OOM every pull. VE Has a 10 second cooldown so on packs of 3-5 you'll probably only be able to cast VE on 1-2 mobs before they die.
Warlocks are superior in every way IMO. They take less damage, have solid tank pets and effectively unlimited mana. They can also switch between DoT's and heavy burst damage easily.