I had to replace my broken cycling shoes this year, and bought a pair which basically have a mesh upper. They are great in the warmer months, but they are way too vented to use in the Winter, even with overshoes.
I've seen that there are winter road boots but they're pretty expensive. The only other option seems to be the Northwave Flash TH shoes, but they have mixed reviews. So not a lot of choice! But has anyone had/have shoes that they think are pretty warm/not well vented? I know it seems like a weird question, as I think I'm asking whether you were disappointed!