I multi-boxed a rogue and druid to 70. Just using multiplicity on 2 computers, and using a gamepad to control the druid; didn't know about keyclone at the time. It worked pretty well. You have some options as to what to spec the druid, resto is easiest and you can just plow through mobs without worrying about the rogues health. You can also stealth with both characters, which makes questing much easier.