<- kills white mobs on weeping hollow MP10 just fine, for around 100mi XP/hour (would be, with a radiant star on helm. 97mi/hour without).
I'm running since I had less than 200k DPS and less than 16 ticks (34 IAS, no skorn). It's possible, but not recommended.
I don't like to use builds without a fury generator. Unbuffed stats (with ruthless, weapon master and without dodge are).
DPS: 216k (200k works for white mobs)
CC: 57,5% (because I don't use OP. 47,5%-50% works if you use OP)
IAS: 43% (I like to have an extra 1% IAS for non-wrath bp, but not sure on that)
LS: 2.9% (IK belt)
Life: 52,7k (don't go under 50k)
AR: 530 (don't go under 500)
Armor: 5798 (don't go under 5500)
EDIT: Buffed TDPS: 1712325 (with Brawler, WotB, Battle Rage and Scoundrel)
I like to run on weeping hollow since, imo, it's the place with easier mobs around. You still can get around 100mi exp/hour and 4 legendaries/hour, which isn't stellar, but it's ok for budget gear.
I have an 9 IAS Skorn and I lose DPS and EHP (the non-ias has almost 550 str) if I swap, but I gain 1 extra tick. I change Skorns once in a while, but I can live with both. (That means you can permawrath with or without overpower, at 17 or 18 ticks)
Imo, 42-43% ias and 9 IAS skorn is the way to go, since it is cheaper and it makes the transiction for LS Skorn easier (you just move a breakpoint). I wouldn't gear a barb for 17 ticks using an IAS Skorn, just in case.