if me i will Choose Loki (with Great build i think it better with pvp) and i will chose Sinx Crit for Breaker (crit atk type sinx)..but u still can break using Loki..just u will loose x2 atk (if u use it on the main hand bcuz it blade type) ,but u still can use it for the other side of hand and main your mainly hand a Dagger :o ..i think...