well, if your lvling force up, its not that great of a skill. but since you are, the rumor you heard about that res'ing thing is totally false. if you read the description it gives you, you can only res till lvl 21-23 or something like that. so just read the description, not rumors
and thats a bad idea for harmony therapy for a blader, maybe for a bow, since it acts as a "sniping range." but other than that, i see no use in it. i mean yes, its good for protection, but for anything else except a bow i see no use in it
- unless, you want to just look like a bad ass or somethin, then go for it, but its really useless, but effective
hope this helps, and just read the description in-game for skills, youll answer your own question
INT FTW!!!