To be honest, I mostly rely on wrathful caged heart of the barber to kill things just out of range that I wouldn’t otherwise hit with both hits of DS. That and leap, which I set to bludgeoning to proc walking arsenal. Leap may generate more fury than you need for DS though because you’ll get to the point where DS is self-sustaining anyway.
DS can be self sustaining fury-wise with dual maces constantly stunning, coupled with the knockdown malignant heart (I forget the name sorry) that knocks down when your skill is above a certain attack speed (which you get with accelerating aspect).