@JSWolf: Absolutely, I made a video earlier when I got the prototype working, you can see it here where I compare it to a family member's Kindle:
https://www.youtube.com/watch?v=Rdy5Xh7YX3g
Since then, the animation has been made just a little bit smoother in the release version.
Also worth nothing: due to the way screen refreshes work, the expected impact on battery life and such is probably negligible (<1%), the frontlight for example uses much more power than the screen itself does.