That is the most insanely badly engineered thing I’ve ever seen. A padlock THROUGH THE TRIGGER GUARD? Yes, if you get the padlock BEHIND the trigger, it will stop it from firing, but it’s far to easy to hit the trigger
As an amateur holster-maker and firearms enthusiast, if I were going to put a padlock on a holster (and I wouldn't BTW), I'd put it up on the thumbbreak/retention strap. Putting the lock through the triggerguard is unnecessary and evidently dangerous. Let the leatherwork protect the trigger like the Good Lord and John Moses Browning intended.
I see no reason why a pilot who has put himself through the requires red tape and training can't keep a hot gun in the cockpit. Israeli-style draw may work for the IDF, but a round in the pipe is a good thing to have when you really, really need it.
Better idea - lockbox.
Bureaucrats will never get the message of commonsense re firearms.