Maybe the bookstore could just keep covers. You take the hopefully pretty piece of art up to the register and once you pay you get the ebook added to your account. Make the reader cover like a viewbinder so you can slip the cover art in if you want people to know what you're reading. At home you could keep them in a photo album on the coffee table so all those people who are outraged that they can't snoop your virtual library have something to look at while you're making coffee.
