Hm, interesting. I'm not opposed to the idea of studded tires on the uptown. That said, the bike unloaded all ready weighs 36 lbs. Adding more weight is something I am kind of opposed to, as it affects handling and pedal effort.
My thinking on the SE, is that it has a coaster brake, so it's all ready half way "all weather". Just add drum dyno hub in front, lights, fenders, and rack, and I'll probably still be well below the weight of the uptown, especially seeing as a drum dyno hub, will likely go on the uptown as well as a few other bits & bobs.
The SE is 700c on top of all that, which makes it handle a bit more responsively and better leverage.
- Andy