In addition to the power efficiency, one advantage of an e-ink screen is that it does not illuminate a room at night. And interestingly, a Kindle or similar device still seems to be the cheapest way to get a touch-enabled e-ink display of a reasonable size.
FWIW the Kindle Paperwhite also has an Experimental "Beta Browser" that can display websites and execute some JavaScript - I am using that for a similar project, a basic dashboard / light switch web application hosted on a Raspberry Pi.
It has some limited features and the UX could be better, but it is open source and works across Linux, OSX and Windows, so other people on the team can edit diagrams I have created.
I still use Picasa, because it is so fast and easy to just copy an SD card somewhere to my hard drive and have it show up at the top of Picasa seconds later.
Then I browse the pictures, star the ones I like and process them.
An no other software I have tried so far comes close in terms of speed and UI efficiency.
So I would also love to try PhotoStructure and have signed up via your landing page.
FWIW the Kindle Paperwhite also has an Experimental "Beta Browser" that can display websites and execute some JavaScript - I am using that for a similar project, a basic dashboard / light switch web application hosted on a Raspberry Pi.
https://github.com/janhapke/screendle