A cotton anorak is really easy to sew.. that's how I got mine.

Tom, for good winter muks you can't go wrong with the Canadian Forces winter boot - That's what I use. You can find them pretty easy online in surplus sales and ebay. Try to find somewhere that will sell you an extra pair of the liners. I have no doubt the empire canvas stuff would be awseome, but the army muks are cheap and keep me warm. This is very different from the US army "mickey mouse" boot - this is a nylon shell mukluk with a rubber footbed. they breathe a bit and work well in deeper snow.

They typically come without a footbed, so to mine I add a plastic "waffle" bed, with an insulating feltbed overtop (keeps bottom of feet warm and not moist)