It's hard to say.
On my boat... I have a Poppy cover. They are 100 waterproof. After a good rain... there is a lake in the cover. (but not in the boat) Fyi... my boat sits out all summer. (with it's cover on)
My skis have "OEM" covers... and they SUCK. They both leak, and they both are building mildew. SO... this summer, I've bought a large silver tarp. I like it better than the covers. It keeps the sun off my storage box... and there is no sign of water in the foot wells. Since it's not pulled tight... I don't think it's going to trap any moisture. BUT... after a day out... I leave the seats off, and let the skis dry a little before covering them.
Hope that helps.
PS... I think Poppy makes covers for all the skis you have listed. You may want to check them out. (but a tarp is cheap)