the only times i can remember/feel walking backwards for sorta similar reasons were in blizzards on Grouse or Seymour Mts, skiing
spots in the Vancouver area .. no way it would have been anywhere as as cold as places you have lived .. my -70 was wind chill,
of course, maybe it was only -40 even .. lol .. if you were off to work it could have taken you some 3 hours or more, eh .. grin ..
yeah, i can still feel the abrasive 'hurt' of cold wind on the face