I'm not sure I have a camera good enough for a useful video. I'll try tomorrow, when i have some light but...
But I went testing the no flash mode. It's actually pretty cool
There is no trace on the screen.
Do you have an e-ink reader already ?
Edit : efter a bit of reading, it seams to be slower to turn page. But it's actually hard to tell if true, or if it's just an impression.