Yes...I am waiting to see if a person can add their own pdf files into it. If possible, with the note taking and other features, it could be very beneficial for professionals and students to keep on a hand held device.
Otherwise, it depends which texts would be available to add to the catalog.
Honestly, though, I am very intrigued by the coming shift as text books migrate into e-books where their multimedia can be included with what is happening on the screen (and further interactivity can occur).