I went mtb riding with a good group of guys that I ride with often yesterday. It was a brisk 18 degrees F out, but no wind.
I wore my hiking boots with 2 socks and was the grunt of everyone's jokes, as they sported their high dollar "winter" cycling shoes.
Within a half hour into our ride, I was the only one not complaining about cold feet. I guess the laugh was on the other guys.
Function over style any day!