Hmm, well I mostly PvE. I was considering going sorcerer to heal Operations for end game BUT am I allowed to respec? Because leveling as a healer is plain silly.
it's not that bad actually. having your companions fight with you makes a big difference. my scoundrel leveled as a healer all the way to 50. was actually pretty easy as i could heal both myself and my companions. i could even solo heroic quests which are harder and meant to be done in a party. the only thing was that some fights took awhile since i wasn't specced for DPS, but that didn't really bother me too much.