Even with a ton of haste, you'll be nowhere near a rogue. I'm using a faster weapon (BoH) and have a decent amount of haste (109), and with WF totem I'm swinging at 2.63speed. That's still slower than most main-hand weapons, and I don't have flurry.
Granted, I could up my haste rating to 200 if I wanted to, but that only drops me to 2.52spd. Not much to worry about