this is a good time for a "lets try it out" story..back in the 70's i knew some guys who wanted to try Real Winter Camping..they went up to the canoe park in Northern Minnesota and skied back into one of the lakes to camp. it went down to 30 below that nite..none of the gear kept them warm even with doubled up sleeping bags..they were up most of the nite sitting around a huge fire. next AM back at the car they had to put pans of hot coals under the oil pan to start the car..ice fisherman do camp out up there but they take big tents and wood stoves..
it's 6 below right now..i don't have any plans to go anywhere.
think desert in reverse---