Modern safetys are more reliable than the older ones. Just like modern rifles are generally more accurate.
Mechanical safeties work in addition to the one between your ears and the one on your hand (trigger finger) and good muzzle control / awarenes.
Empty chamber as far as i am concerned allows you to develop sloppy safety habits.
If you are hunting in pairs one in front loaded safety on and one following unloaded. Happy days.
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