I don't know but I have several of the Yosemites and I too, would like to know if they will work with a cover. For the time being, I just keep a few socks made of cotton for toddlers and slip them on.
Same with my rifle scopes and if you lose one no big deal. They are also great to slip over the scopes when you are cleaning. Sure keeps the "splatters" off the lenses.
