I've been looking at these too for my so n for college going between classes. He wants a Segway that can even be used through the snow... but they are a over priced. Looking at one place its $230 / month for 60 months... okay can you say car payment http://shop.segwayofalabama.com/
Ive been watching the swagways on tv, thinking this may be an alternative.
It's already more difficult maintaining one's traction and balance on snow with the two legs you've been using all your life.
Attempting to do so on a segway or swagway is just silly.
If you do it, please make sure to get it on video so you can at least get a couple hundred thousand hits on youtube of the inevitable fail.