Granted it isn't legal to hook it up the way I mentioned in the post above as it would not kill power as long as the engine is running off alternator output but once the ignition is shut off the alternator power wire would be dead with the master cut off shut in the off position until the ignition power switch or the master switch is switched to on. But with both switches off it would be dead as in sitting in a trailer or in the pits. Not legal NHRA legal but the power would be dead but wouldn't kill as long as the alternator was charging.
You do your others can do your thing and me and many others will do ours. Hope you rewire your drivers so that they are dead when you throw the switch there lot more live wires there with the ignition off. That way you can sleep easier.