Thought I'd mention that I'm a Twin Cities commuter and I've gotten through Minnesota winters on my Kilo TT just fine. Unless your commute consists of actually riding the entire way through unplowed snow (which is possible in some cases; you can always gear down a bit), most of the plowed streets shouldn't be a huge problem for the Kilo TT's tighter geometry.
The only thing you'd be missing out on is more clearance for fenders and such, but the fact that it hasn't even started snowing yet shows that you can get away with a track frame for a majority of the year. Between a Kilo TT and the Uno/WT, I'd pick the Kilo TT (though desired sizes may be limited). Invest in a pair of 28c Randonneurs and you should be gold.