I don't think you want to combine toe covers with shoe covers. Some people have more trouble with toe compression than others, but I don't see how you could not have trouble if you use both.
Maybe find a cheap pair of shoes a size too big for the coldest weather. That way you could wear extra wool socks while still making sure they're plenty loose. (If you do that, make sure you get the shoe covers big enough for the larger pair.) The most important thing about keeping your feet warm is ensuring good circulation. My feet actually stay MUCH warmer with just one layer inside and one layer out, than they do if I try to over-stuff my shoes and wind up cutting off my circulation.
Last edited by OakLeaf; 11-17-2013 at 02:08 PM.
Speed comes from what you put behind you. - Judi Ketteler