Look at what the Inuit wear.
We don't consider "waterproof" at -10C and colder. The snow is like sugar, it brushes off.
I leave a car snow brush outside my door to dust myself off. in winter.
I see "Baffin" brand in Wayland's po.st = top brand and durable. Dakota is another.
The good snowmobile boots and gloves (some are plug-in electric!!) are Tolko.
Eddie Bauer down coats are good below -20C but the zippers are crap.
Pocket flaps are fairly useless, like wise.
I need parka pockets big enough and open enough to wear my Tolko gloves.
Wet boots inside? Use plastic bags to keep that moisture from wicking into your socks.
Drying? Build a serious electric boot dryer. OR, stockpile old newspapers.
Crumpled and stuffed into wet boots with many changes, excellent cheap dryers.
But, don't use woven fabric boot laces of any shape. Don't. If they get wet and freeze,
you will have troubles not only undoing them but snugging them up again.
Sure you can putz around with silicone sprays for added messy expense.
Your best choice by far are oiled leather thong lace. I'm paying $8.00 for a pair of 72" Canadians.
I am just about to hang my old Carhartt barn coat on a peg by the door and the damn grapes are still on the vine.