I hit 70 on my four shaman last Thursday with 10d /played. This is with sporatic play over some months. I have boosted the four shamans almost all the way to 58, doing some questing in between to break up the monotony. From 58 onwards I did quests with an eye on rep and xp and went through the zone dungeons once or twice, which nicely covers the loss of kill xp compared to a single player. When I hit 70, I already had the pvp rep noob gear in my bags, ready to be equipped.