I would say I'm mostly done with printed books. After a few months of reading on my Kindle, paper reading seems a bit archaic. I'm aware of the infrastructure required to support my Kindle, and so it is very important to work to make sure this infrastructure continues to exist for quite some time.
I think a lot of people still publish in both formats since it is still easy to do so, and not all readers have an ereader. Once everyone has their free disposable ereader, the flame of knowledge will burn brighter than ever before.
Printed books on paper, even hemp paper will be an anomaly, reserved for specialty books i.e. coffee table books about coffee tables.
