I don't own one single Apple product

And some decide to stay in the gutter. That is your choice, but don't pretend you are better than me because of it.

because I don't buy into walled gardens, it's that simple.

According to Wikipedia, the current eInk Kindles are all about 68 ppi. So this screen would be as good (if not better) than the current Kindles in that department.

Unfortunately, this screen looks like it lacks color saturation, which seems to be a common trait among all color eInk displays. It's a big improvement over previous displays, but I still wouldn't put it in a product yet. People would immediately put it next to LCD displays, and compared to the display on a $60 "might as well sell it at the drugstore" tablet, it would look bad.

Because a microphone that is on a person's body is going to pick up everything that person hears as well.

And for that matter, it will probably be loads more reliable than trying to decode electrical signals that we are only just beginning to comprehend.