It does seem like an interesting idea, but somehow it feels like it's for a very specific audience. Isn't one of smartphone's pros - the ability to fit something alike to computer into a pocket size device? If my productiveness is affected by the device I'm using it's easier for me to jump over to another device, and not make my first device alike to the other device that I could have moved to. So it's a great option for someone who let's say doesn't have or want a laptop but still wants a portable computer(?) for $200.