I stumbled across this while looking for a low cost portable kbd/mouse/display option for my Raspberry pi. Thought you would find it interesting
I like what they have done but would want to have access to the GPIO header and camera port.
Using the Pi 2 as a computer is really not a bad idea. Especially if the come up with a small solid state drive for it.
Currently I think the bottle neck is the data transfer rate of the Micro SD card.
Read more about this cool laptop kit here