Manual transmission cars with the older style three-finger Long or Borg & Beck clutch pressure plate designs, apply increasing pressure as the clutch pedal is pushed to the floor. This produces maximum forward thrust on the crankshaft while attempting to start the engine.
Diaphragm pressure plates go “over centre” at full release which applies only limited forward thrust.
So the technique for a car equipped with a Long or Borg & Beck clutch is merely to start the engine in neutral.
This eliminates potentially excessive wear on the thrust bearing.
However, the modern diaphragm type clutches which are in the 350Z do not have this issue so it is quite safe to start the engine with the clutch pedal depressed without worrying about wear on the crank half moon bearings.
However, I accept that if you have no safety concerns, then I see no reason why not to carry out this mod, I get your point, but I doubt if you would experience less wear on the thrust washers with the switch being fully active than without, but whatever you are comfortable with.
Good luck with your build.