Using Kindle (PW) as a second screen with your android phone

Hi, I've seen the Kindleberry Wireless, the VNC solutions to use your Kindle together with a PC, but I'm wondering - might there be a way to use Kindle Paperwhite as a second screen for your android phone? It'd be portable like the Kindleberry and would come with the advantage of not having to buy the extra gadgets (i.e. the raspberry pi + wifi/bluetooth components).

All I want to do is to be able to type stuff on a proper keyboard, while outdoors (preferably using Google Docs).

Cheers!