A YouTube video from Germany puts the new reader through its paces. One of which is testing a PDF!
Ignore the subs. I have auto-generated German on, translating to English — which was hilarious.
Look at how much more text fits on the screen:
The PDF test makes me wonder if this would work with the smallest Google Books PDFs, such The People of the Abyss, which is just 7MBs.
The video:
Previously here:
Video: Kobo Aura One Public Library Lending
New York Public Library eBook Lending Breakthrough: SimplyE
Mike Cane's Atomic Supermen 