It's also nearly impossible to find a physical place where you could test it without making an appointment. There are few things I want more than a product like this to succeed. I have had a couple of Microsoft Surface products, and they are amazing. Game changing even. But nothing beats e-ink as far as being pleasant on the eyes for extended periods of times.
I've been trying to move from books to e-books, just because I don't have a lot of space to keep books anymore. For non-technical books, a Kindle suffices. But for anything even slightly technical everything falls short. Nothing comes close to the experience of physical books. The surface is the closest for me, but even that the software available for making annotations on it is lackluster, and just staring at a screen too long is not pleasant. This sort of large e-ink tablets I hope are the solution, but their popularity being so lackluster, makes me think that those that have spent the money aren't quite happy with it.
I wish more products like this keep coming out until one sticks.