Aaron,
Cool bikes!
Brownbear,
excellent point about the ride with the small wheels. As well as being a little more "squirrely", I'd like to mention they also give a more "harsh" ride. Bicycle wheels provide a good amount of shock absorption, the smaller the wheel, the less shock absorption. While bicycle touring on Vancouver Island, I ran across several "rails to trails" (railroad lines turned into bicycle paths) which still had RR ties in place...those can give a good beating on a small wheeled folder.
However, on pavement or smooth dirt/gravel, I love my folder!
John