I duo with my roommate who is a defiler. I run on a brigand. I find that the assistance of his buff spells and healing compliments my dps quite well against named mobs and such. I also set out the other day with a guild mate who runs on a shadow knight. I'm not sure why we were so productive since we didn't have a healer with us, but it seemed to work just fine. As for PvP.. if that's your cup of tea.. you'll definitely want a healer on hand who is on their toes. Especially, when you stumble upon a group of folks with the "5-10 people are mandatory when screwing in a light bulb" philosophy.
