Today was my first 0F commute (one report said it was -1F, another 1F, so I'll split the difference). I took the short way to work (25 minutes) to minimize exposure. Almost all of my equipment worked great.
AmFib Tights: ExcellentMy PI AmFib gloves were a dissappointment. I wore a wicking liner, but my fingertips got cold after 10-15 minutes. I'm probably going to look for a top-of-the-line liner or Gore-tex mitten shell to see if I can keep my fingers warm.
PI Toasties Booties (with SmartWool socks underneath): Excellent
Moutain Hardwear Balaclava & Headband: Excellent
Oakley Double-paned goggles: Excellent
Underarmour ColdGear shirt (I put a wool sweater, spring jacket, and nylon shell over it): Excellent