Played CM to lvl 42 or 43 in Beta, and was able to solo heal all the FP's we entered. Didn't do a lot of pvp, but if you stay at ranged you'll be able to heal decently in warzones. Its important to stick to the tree until lvl 25-30. At low lvls stack power and crit (they will increase the amount hammershot heals for, and helps to conserve ammo).