I had a Kindle to play with a few weeks ago. I loaded just the Texas plates as PDF's from Nacomatic. It took along time to get them loaded on the Kindle and the charts where a pain to use. It took many steps to get to the Plate I wanted. Trying to zoom to a larger font/image was a challenge.
It didn't take me long to decide Not to use the Kindle for approach plates.
It seems the Kindle is really designed for reading e-books, not PDFs.
This feature is only really useful if there is only one page you will need, and you leave it on that page the whole time. Or to put it another way, imagine you were reviewing the airport chart when the Kindle fails. How do you now use it to fly the instrument approach?I'd be afraid of doing an iPad or other device that if it failed, would blank the screen. The fantastic part about the e-paper is that on failure the screen stays what it was the last you looked at it.