I want one... At least I want to have a hands on session with one. I need to find answers to these questions:
1. How good is the viewing angle of the bottom screen? Does it distort colors and can I use it for image references?
2. Can I independently control the brightness of both screens. If so, how easy is it?
3. Keyboard shifted below may compromise comfortable typing. Since it is elevated my hands could get tired from hovering or an awkward palm rest position. This isn't a problem on most laptops since palms rest on the sides of a touchpad.
Just to give myself an idea of how it might work, I placed a phone on top of my laptop's keyboard: