For those who ride in a few inches of snow, is it worth it to get studded tires, or will simple MTB tires work? I rode home in the snow once last year with my almost-slick 700x32s and it was a bit hairy.

Also, OP - you definitely want something to cover your eyes if it's actively snowing. In the aforementioned ride home, my eyelashes had a nice think layer of ice on them by the time I got home (~7 miles). Ski goggles would definitely help.