I also only play WHM in pvp and i give my commendation mostly to useful tanks/healers. If both arent the case then i give it to the best dps. In general, i really enjoy to play WHM in slaughter. I think as healer you can contribute the most to a frontlines match. Last night we won a game in 24 man slaughter and i had the most kills (4) in my group as WHM.

Edit: And hey Faltrask. Good to see you here. We have played plenty of games together already.