I think they're really effective depending on what you choose as your other spec (I would suggest something that maledicts which you would use to start the fight off with - i.e. impale/hamstring/artery) before going to your power.
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<br>There should be some logs of Icthaen (arial) with axes around here somewhere. It also helped that he had maran weapons which made for very good light axes.
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<br>I found pretty much all the axe skills worked well in general, though I didn't use overhead or hook much.