I'm using the Throttle cut on my 9Z and it works just fine and I choose the swithc that has a spring on it the one it's also used for training,, and I have set u0p where you have to hold the switch to kill it so you don't kill the engine by mistake!!!,,, and then if you are using a servo for the Choke you can also kill itthat way,, I have my servo on a dial on the radio so you can give it anywhere in beatween from close and full choke!!!

But in 9 month I have only kill my engine with the engine Cut Switch on the radio!!! and it work every time!!!! I think it make no sence to spend that much $$$ on that kind of switch!!!

Good luck