I have been playing with Asp recently because I do a LOT of quickstrikes, and for me the 1minute cooldown is basically forever, I don't notice a difference in my killabillity that justified the points for my warrior. Dervish is GREAT (assuming you have a decent flurry of MSTRIKEs and utilize your free mstrikes on a regular basis) I rocked it from like 40-cap. At cap I found that precise attacks were much more valuable in the sketchy hunting locations, so continuing on unexpectedly cause me some hardships for very little gain. I think evade mastery is the only one I see on there that "I" would consider vital, and in plate my returns are much less. 3% to your 21% (assuming leathers?) I LOVE Evade/Block/Perry percentages since its not just avoiding % "hits" but also % reduction in stuns, RT stacks, and straight insta kills.
Obviously this is all coming from warrior eye, so take that into consideration.
"Hi, my name is Ososis and I'm blaming my shitty life for being such a fragile, soy drinking, emotionally unstable loser. My triggers are: Red reputation, ANY mention of MacGuyver and being called a fragile, soy drinking, emotionally unstable loser."