That would defeat having two switches on the outside of the cab, wouldn't it? I'd still need to run switches off each power cord coming off the main receptacle box.
I have the impression this will work, my main confusion is the terminal block to be honest. I know I could just pigtail the same setup, but it would be harder to disconnect the setup. Also, could easily put a switch in line prior to the terminal block, but that would have everything be controlled on the one switch.