I'm a duel wield fury Warrior. I absoluetly love this thing.
All these stats both duel wield fury warriors and rogues can make good use of.

Both Duel wielding fury warriors and rogues can use this mace equally.
The stats are amazing for both. Therfor in my opinion there is no priority.

My guild should be starting Ossirian soon. We just started AQ and are making fairly good progress. I'm looking forward to having a chance to get this, I use to dream about it when I was mace-spec'd. I'm currently 31/18/2 and using the brut blade as a main hand. I would definitely consider this an upgrade. I'm considering dual-wielding it with the Vis'kag if it ever drops ;).

As far as mace spec'd rogues: I use to be mace spec'd, it's fun for PvP. The stun seemed to always proc right after my kidney shot wore off. Mace spec could also be nice for PvE seeing it gives you +5 maces, which increases your overall damage. This would be nice on a human rogue, who has Mace Specialization as a racial, because you would have +10 maces... I have yet to try it as a level 60 human rogue but I'm definitely planning on it when BC comes out. I just can't give up SF /love.

As far as + to weapon skill, I'm not positive how much extra damage it gives, but I think +5 is about 30 damage (if anyone knows for sure please correct me)? I'd assume this depends on the weapon. And of course it helps your chance to hit ;).

I might be a n00b but MAce-spec doesn't suck for PvE since 1.12 right?

got this for my rogue and its very useful for wut my spec is hemo/coldblood becuz of my spec i dont have that high chance of a crit so i depend on alot of agil/AP/+%crit and this mace is great for it