Yes, I went out and made a screenshot of a Worgen with two wolf-headed fist weapons. I did this via the latest iteration of WoW Model Viewer, freshly updated this Saturday, September 5th to work for patch 3.2. While it has a posted warning use it at your own risk which I thought I should mention, I should also mention I've been using it for the past half an hour with no harm and no foul. I've even been able to play with Trial of the Crusader loot. Go behind the jump to see a Worgen dual-wielding a Justicebringer and Reckoning. Not that I'm obsess with Titan's Grip Worgen or anything. Okay, so I totally am. At any rate, so far as I can tell, this version of the Model Viewer is stable and working with all current models.
This update by Chuanhsing even fixed the issue I was having where all my models came out textureless. I have no idea what it was happening in the first place, but I'm glad to see it gone.