I went agility line as well, and am now respec'ing.
currently i run about 65% avoidance, at 80% mitigation fully self buffed.
i will confirm soon, but i've finally found a very good buckler that actually gives me more avoidance then my grizzfleshield.
once i get that thing to drop again, (and actually win it, instead of one of the the priests in the group) i will respec.
by my calculations i should be some where around 80% avoidance, while maintaining my 80% mitigation. if thats ACTUALLY the case (i haven't proved it out yet) that will be by far the best build possible i believe. did i mention that with that buckler i'll be doing more damage then duel-wield or two-hander as well?!?!
now if what works out on paper actually works out in game.... i'll keep you posted.
-Erick