!00% agree! I will never have a tracked type hangar anywhere there is snow or even blowing sand/dirt. I kept my floatplane at a seaplane base ina qounset type hangar that had tracked doors. Those things were a PITA!! when everthing was adjusted right and there was no crap in the tracks, it worked great.
My hangar at home has a bi-fold and I've never had any issues with it, even in deep snow, other than the occassional freezing down to the ground. That is rare though as there is sand up to the edge of the hangar and it drains well enough that when the sun warms the snow, it just melts into the ground before freezing.
My hangar in town, which faces south is a constant problem in the winter. Sun warms up the door and causes the snow to melt and refreeze. I have had as much as 4-6" of solid ice freezng it to the ground. I chiseled it out once this winter when it was 2-3" thick in preperation for a flight. bad storms moved in and it ended up being frozen in even worse! The ice was 2" over the top of the rubber seal on the bottom edge of the door. The ice was even pn the inside of the seal. Needless to say, the door wasn't opened again until a sunny day when I was able to get it all chiseled out. I'm starting to realize the winter flying is a young guys passion!!

I hadn't seen the Hipower door previously, but I relly like the idea. Might be my next hangar door!