Ignore the postings below. I just got this last night, and though it's not really an upgrade, the graphic alone (and decent wisdom) makes up for the lack of mana or resists or other stats.
Those who say this isn't a weapon have soot in their ears. In the hands of a Cleric, this is a decent bashing weapon. Apparently the max damage is about 46, with the same cast interrupt effect as normal shields.
The graphic gives me that dual-wield look, ya' know, that "you drew first blood, now you die!" Rambo gaze. Just that, as a Cleric, I can't always deliver. Except those giant bats in Butcher.