Some work some don't. It dosn't have anything to do with class that I know of. I've kneeld in front of Grenth and got him to give me a morale boost and i'm a Wa/Mo.. When you get to the temple of ages you can kneel in front of Balthazar and Grenth and do quests. Lyssa, Dwyana, and Melandru however do not offere anything as of yet :|
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