Speaking of Shaman

[Treesh]

The other reason for not thinking we'll need the healing is we have done duo's with warriors/priests (two of these each of us with a warrior and each with a priest), hunter/shaman, mage/warlock, druid/rogue, hunter/priest. In some of those cases the healing class optimized the healing, in some they didn't. The duo's where both classes focused on damage or tanking and just left healing at base, killing was faster and easier and more fun for both players.

You didn't mention that one of the warrior/priest duos was a prot warrior and a holy specced priest and the other warrior/priest duo is an arms warrior with a shadow priest. The arms/shadow combo was able to handle bad situations much more easily because we were able to actually dish out good damage. The more damage you can put out, generally the less healing oomph you'll need since the fights don't last as long.:)