[Vicious Love]

You sure wardancers should go berserk? Methinks somehow being able to wield two long swords at once without tearing all of one's upper-body ligaments and tendons is adequate representation of their superhuman grace, speed, and ferocity. Encumbrance 1 might also serve to drive the point home.
True, wardancers do fight in a frenzy, but said frenzy incorporates more precision and elegance than any berserker could get away with. That is to say, I'd expect a wardancer to have a defense skill that puts van and tuatha to shame, and not to lose said defense skill the moment he's grazed by an arrow.
You might also want to consider giving them no protection, but a few levels of air shield, to represent the Snikchesque ability to pluck arrows out of the air with their toes, or whatever.