I will have to do more testing in pvp with this build; it may be that criticals are necessary despite the lack thereof to ensure a kill.
EDIT: Current analysis suggests that the tank build works just fine to kill someone, you just have to click-spam while refreshing ap and hope that they aren't faster than you. Also, you can take a non-crit hex to the face and still give out a beating. I imagine with IYF this would be a pretty good build to use.