I would not shave, but at the risk of being undainty *haha!* I would turn into a very itchy bear. -30C doesn't like hairy legs in longjanes, and neither do four cumulative weeks at -50C uranium mines (though, to be fair, I'll be mainly in drafty camp buildings laying network cable and sifting through schedules.)
I generally wax twice all winter. Perversely, sometimes I go hairy in summer when the air conditioning forces me to wear trousers and heavy tights with my skirts.
But kudos to all who do No-Shave November, and those on Movember fundraising teams. All of my technicians are growing staches, from the bountiful to the weedy, and I've pledged to them all for their stubbly efforts.