tabards
Everytime i hear it called a tabard I think back to a theatre show i was in called Julius Caesar by W.S
Now I just imagine pilots wandering around in Roman wear. Ramp/Fire crew dressed as senators. Captains/F.O's/GA pilots dressed in full gladiator attire. Even though the sword may get in the way of the throttle(s) and the shield may obscure forward vision. This aside, I like the idea of the Roman theme and think it would add an air of culture to most flights.
To finish the whole picture of, we could have ATC saying with each departure clearance;
"aviators who are about to fly, we salute you."
(the original line being; gladiators who are about to die....etc.,but that a bit morbid for aviation)