Heres where it gets a little confusing, for me at least. I have read Nubtro's thread more than once and have a basic understanding of Whirlwind mechanics. I currently run without a fury generator and never actually swing my offhand unless I'm casting Whirlwind.
My question is; If you hit sprint while using Whirlwind, will the tornadoes that drop run off the attack speed of the last weapon swung before using Whirlwind or will they run off of the last weapon swung using whichever hand Whirlwind has you swinging at that moment?
I was thinking since I never actually swing my offhand outside of Whirlwind I could consistently drop tornadoes that will run at the higher breakpoint. I'm now thinking that assumption was incorrect and I am dropping tornadoes without being able to control their speed. This brings up more questions... Does the tDPS calc on http://www.d3rawr.com/d only calculate your highest breakpoint or will it average the damage out if you run at 2 different points? If you run an axe EF set up should you be worrying about your offhand breakpoint?