I just tried out the app on my Touch Pro 2: The app opens my B&N library, and a list of books I can download, from their website. However, none of the books in my online library would download on the TP2; I got messages that state “Title not currently supported on B&N eReader for this device.” Also, the app gave me no way to access any books I already had stored on my device. And unfortunately, there was no way I could find to specify my reading device on their website (unless I owned one of their supported devices, or a Nook… WinMo devices are still not supported.
So, it's pretty useless as far as I'm concerned... so far.
See my
evaluation of this, and other apps, on the TP2.