There are also benefits to wearing a uniform I knew of one now retired corporate jet captain who on having positioned a jet and then getting a scheduled flight back would milk the uniform for all it was worth jumping security line checks by walking to the front where other PAX were happy to let him pass!
On a long distance flight some years back he would sit in cattle class and often talk himself into an upgrade to save the airline the shear embarrassment of having him attired like that!
Short haul he still sat in uniform and claimed that on one occasion getting admiring attention from the surrounding PAX was told on descent " don't you think you should go up front now " ?
Pace