I've got a fairly well geared Pally tank, priest healer, and lots of ranged DPS casters. All my toons are pretty much maxxed in Naxx 25 gear, or heroic badge gear, so I'm right around the Ulduar mark, probably ok in ToC too, but on the lower end. My shaman are mostly PvP geared, but they still do ok in a raiding environment, even with all that wasted resil and stam.

I'd prefer to just DPS on most raids, I'm one of those guys who likes to min/max (without going overboard) and top DPS charts, so with a lock and a mage, I am comfortable. If I need to tank, or heal, I'd prefer not to do more than 2 roles at once, and even on that note, I'd really rather single role raid at the moment.