I see lots of posts on this topic, but didn't find two questions.
(1) How do the rolling covers do in the winter with snow? Any better or worse than hard folding, which require clearing off snow/ice to fold and seals can freeze to bed frame.
(2) I have a hard folding Bakflip F1 today. I do like that if I have cargo above bed rail, like leaves or other yard waste, I can lay the folding panels over the cargo and the weight of cover helps hold in. Otherwise, I can drive truck with 1, 2, or 3 panels open. Can you drive highway speeds with rolling cover partially open at various positions?
(3) Any better/worse water proofing than the folding backflip, which lets water in the corners?