Originally Posted by
PaulRivers
It's kind of funny, I've read several people say the opposite - that they actually use sandals for when it gets really, really cold out. By using a Goretex (or otherwise windproof) outer sock, this lets them add several layers of insulation (socks usually) over their foot that they can't fit in a boot (or at least without buying several different sizes of the same boot).
Yes, this is my first 'winter' without sandals and my feet are already getting cooler as I can't put on thick and/or multiple socks or a waterproof exterior one. Really is is not cold yet (40F dry low) but my feet in mtb shoes with a thin wool sock feel cooler (not yet cold) than last year at 26F with a thick wool socks and sandals or 40F in rain with wool sock and waterproof one.