You carry a DSLR, a smartphone and a tablet.
The question is why?
The answer is they have hooked-up.
A 10" tablet that carries a phone communicating with the tablet via near field communication, with the heavy-lifting done at the tablet, solving the health-related issues that exist with intentional RF emitters proximal to biological tissue. The piece-d' resistance is the APS-C format imager and interchangeable lenses, beginning with a versatile pancake lens that does not protrude any more than the commodity lenses that present tablets have.
Road warriors: carpe diem et junk deserere!