Actually, I was wrong -- the Epson P2000 will indeed serve perfectly as an e-book transfer device! In the Setup menu was an option to Hide or Show unsupported file types. It was set to Hide them, and I changed it to Show and I can see any/all files which I can put on the hard-drive via USB mode from my computer, or copy to the P2000 from a memory card. The only downside is that it only takes SD cards or CF cards, so for the present I'll be limited to using SD cards for this sort of book transfer.
Thank you Andy for suggestion this method!
