It's possible, but I don't see any points in it 'cos you don't see where you clicking on LCD.
It's also possible, but only if e-ink will use non Android apps (trully it's possible even with android app, but will requre even more work to do it possible). The opposite (keyboard on e-ink and office app on LCD) is much easy to do.
I have not talked to them about the hiring or the sale of software, yet. So we did not discuss money matters. I simply asked about their attitudes toward possible collaboration. And they were very skeptical, but nonetheless interested in some of the developments regarding energy consumption. The problem is that even though I have reached success relatively small power consumption, a more serious modification requires the hardware documentation (developer manual's which are commonly under an non disclosere agreement), and may requre the changes not only in the kernel, but in the BIOS, which is impossible without a source, or at least the instructions from the manufacturer. I can try to make the necessary changes by "hacking", but there is tremendous risk to destroy hardware. So at the moment we are in a difficult situation when both sides are waiting for some results or guarantees from the other side, but do not want (or can not) do something for the other side. On Wednesday, I sent them some information about what has been allready successfully tested, and what will needs to be done to reduce energy consumption (without publication of specific source code to achieve the goal). But so far, no response received.