Update -
Great idea that didn't work out. I kept bumping into them as they stick out into the aisle too much. Also, a locking-pin is needed or whenever weight is put onto them the seat back tries to fold down.
Hey man, you have to try... I like the idea as well. I'm thinking of a swivel seat platform that has removable armrests. Not much room though with the engine controls mounted nearby. We'll see...