Now that I've made MaxMind aware of the consequences of the default locations it's chosen, Mather says they're going to change them. They are picking new default locations for the U.S. and Ashburn, Virginia that are in the middle of bodies of water, rather than people's homes.
For text only books, I find a regular 5/6" Kindle works fine and is comfortable to use for hours. I can set the font size to whatever I find easy to read.
For books with graphics or color, I use a 10" Android tablet. The battery life is good enough for a couple of days use.
I don't see how this product could fill more than a small niche. There are other tablets that you can draw on. How many people need a device that has such a large screen but only renders in gray scale with no color?
An Ada exception is when a routine gets in trouble and says 'Beam me up, Scotty'.