sony reader works with ebooks and libraries, sort of

The new Sony Reader, the biggest competition to the Kindle, is supposedly going to be able to check out digital books from libraries that use the Overdrive service. I guess this begs the obvious question: why go to the library for this service at all? I guess that Overdrive just bulk offers the checkoutability service to libraries (hello restrictive DRM!) which is something but man I just wish their service were better and easier to use.