When I listen about laptop project based on Tabor UT sounded that "Tabor" has everything to become DIY laptop. That would mean that integrated gpu is not that tragic.
a "laptop" with a 5 cm high body would be a laughing stock pretty everywhere in the open, not to mention it would be a "laptop" you would have to carry a car battery with for a power supply, since no power management. judging by the photos there is no elegant and practicable way around it. it will always remain bulky diy chest. instead one could simply put it in a slim itx case or whatever it fits in and treat it as portable enough.