anybody use this car cover on their prius?

Looks exactly like one I bought in costco a couple of years back.. Except the costco one came with the lock for the same price. Good cover. Doesn't scratch. Semi-waterproof.

 

I'm using a Coverking Quicksilver Plus. I'm satisfied with it

 

I bought the one from the Priuschat shop, but rarely use it because it's more effort than it's worth, but I assume it's no better or worse than any other cover in that respect.