I was amazed how well the Pugsley handled the deep snow on the ride home. I was able to chug along pretty easily. Normally in deep snow I'm wobbling all over the place, but with the fat tires it was very stable and the bike went where I wanted it to go. The Larry tire in the front doesn't have much lateral traction and could slide sideways if I wasn't careful turning. If I wasn't getting studded tires I'd definitely replace that tire with something knobby.
My biggest problems on the ride home were fogging glasses, and deep snow make it impossible to tell where the MUP was.