Will do on the power and I haven't tested anything yet. Spent all day yesterday sorting out the robot's drive so having a bit of a break today.
Apologies - the switches I use have continuity when the button isn't depressed so pressing the button breaks the circuit (tested with a multimeter). The wiring for both is + and - in parallel from the same pads as the arduino power in from the ESC then an extra wire is also soldered to each of the - tabs on the switches in addition to the - wires as the signal wires back to pins 2 and 3.