I've been tracking my range, etc. with my 2016 former Teo Taxi cab here in Calgary. My car
does have the battery heater and heat pump, and I do charge at home (and the office) with the 120v Type I charger.
So last week it was brutally cold with daytime temps around -30c and -40c windchills. In my garage (unheated, but attached) it was usually -10c.
I would preheat the car for 30mins (battery pack and interior) via the timer while plugged in to 120v in my garage before heading out each morning, and because my battery is degraded I would also charge at work via the 120v plugins in the outdoor parking lot during the day and preheat the car again prior to driving home.
With the extremely cold temps I was kind of expecting the car to shutdown halfway home like a 3 year old iPhone in the cold weather, but it actually did quite well.
My "normal" range with say 0c temps following the same usage pattern is approx. 70 - 75kms so long as I keep my highway speed around 110km/h or lower. In the extreme cold it dropped to approx. 50-60 kms, and I also dropped my speed to 105km/h. Still plenty to get me one way to/from work (approx. 37kms each way).
I did experience the "Turtle of Doom" indicator (along with "Power Limited") a couple of times when I had cruise control set and the car was pulling up a hill and the car would slow to 97km/h for a few minutes and then recover. So clearly the battery heater wasn't able to keep the pack warm enough for heavy usage at these temps.
The other thing I noticed is that it was difficult to keep comfortably warm and keep the windows clear using the "Driver Only" setting on the climate controls. I had to disable that when driving down the highway or my windows would start to freeze up. At one point I noticed the Power Consumption meter for climate was well above 5kWh!
I was really surprised by how well the 120v charger worked outdoors in -30C weather though. I left it plugged in all day and then had it pre-heat for 30mins before I left for home. On a "normal" day, say 10c outside, it will charge at an effective rate of approx. 5.5kWh per hour. In the extreme cold I was still able to average approx. 3kWh per hour. From what I had read about 120v chargers in cold weather I expected almost nil but was thrilled with the real results.
One thing I did not try was to run the car without preheating it (plugged in). I suspect that it would take a long time for the battery to warm up enough to provide adequate power for highway driving and at a large cost to your overall range.
So having said all that, I think you'd be better off with a model that has a heat pump and a battery heater. Alternatively, if you had another ICE vehicle you could use for your commute on the few very cold days each year that would probably work too.