I'm not an expert but from the point of redundancy wouldn't you want to be able to kill the engine with the choke if all else failed? If your ign is on and your choke is off in position 2 then how will you kill it? If you make pos 1 ign off choke on then you could flip to 1 to kill it. Just my thoughts. You could just go back to putting ea on a seperate switch.