Man I love it. I love the damage from it, but it's all negligible for the most part against healers. The damage output is a bit bursty, but you go out of rage quickly, so you have to watch it more than arms, the main weakness (aside from every freakin damage cooldown causing you to take up to 30% extra damage total) is the "mortal strike" effect. The proc on it is horrible. I was hitting this priest got her to 3k health and then she desperate prayers for 12k. I look at her debuffs after 30 seconds of fighting I only have 1 stack of furious attacks. :|
Aside from that though it's as good as arms. Gotta have a weapon chain or at least a shield with titanium plating. For the most part you can tell when a warrior or rogue is going to disarm you. At least on my battlegroup. (Shadowbad) So it's like"I sense a dismantle coming in. -NINJA SHIELD CHAINBLARG-" something or other and then you're all good. To be perfectly honest though. It is a bit harder than arms. Requires more rage management. You have to use your intercept/heroic fury for stuns more than gap closing half the time. Not being able to use charge in combat is a kick in the di(k. Fighting anything that goes "Dodge. Dodge. Parry. Dodge. Dodge. Parry. Dodge." Is ANNOYING AS HELL! But everything is manageable just requires a bit of tweaking, a lot of patience and...oh god who am I kidding. Blizzard needs to buff the mortal strike proc. T_T Someone please.. tell blizzard to help fury.. I... I can't go on like this.
http://www.youtube.com/watch?v=pR1MG-5BBvg <- Points out the epicness of fury with one of the worst spec choices ever but.. totally. It's the epic.