Originally Posted by mcours2006

Shoe covers will still leave the underside of your shoes exposed and cold air will still find its way to your feet eventually. They may delay the onset, but sooner or later.

When it gets down to -3*C or colder I'll use my Specialized Defroster shoes, which are insulated winter road shoes. Combined with a good pair of wool socks they work well. At -7*C I'll have to use the neoprene covers over the Defrosters. And below -10*C, I'll stick a packet of chemical warmers over my toes. Colder than this I'll probably drive.

Yeah, it's a lot of little incremental mods and a PITA!