I have multiple Rasberry pi systems in rugged cases for Ham radio field work. Projects include a severe weather indicator using the SenseHat running NodeRed and Arduino projects communicating with LabView. Having a portable equivalent of a Pi will be a real improvement . My current iteration uses an weather proof case, 10" HDMI screen, pi Power hat, pi and 12 volt distribution for low power operation… a rechargeable setup like the DevTerm is going to be a plus.