Just for the record, I am levelling a sawbones named Brasstack. I got him nearly to 50 when the 12x exp ended. I have to say, he may be my new favorite toon. It's my first ever healer, and the higher I level him, the more I like him.
I guess I always thought healing meant you couldn't really do anything else effectively, and I only agreed to try this because of the levelling rate. Turns out that he does decent enough dmg in solo content that he's actually a lot of fun to play.
When I get him high enough, I definitely want to try healing for raids. I think he would be a lot of fun for raids.