Backflip or roll n lock tonneau cover

I never used one, but over the winter, someone put a post and photo of their truck and camper in the snow after they got a couple feet. The camper had no snow on it, the back of the truck had 2 feet of snow on the cover of the truck bed. He made a comment about wondering how much snow the cover would support.

Something to think about and ask before making a final decision. How much weight can it support. I see you are from Mass. You get snow! Which one can carry the heavier load unsupported? That would make my decision.