Would you say it might actually be safer to wear workmen overalls when flying light general aviation aircraft rather than a full FTO uniforms with belts, buttons, epalette holders, name badges, security/ID lanyards around your neck because you would probably get all of those caught should you need to make a quick evac out of small crammy metal door?
I think the wearing of overalls is actually much more appropriate in a light aircraft than FTO uniforms. The RAF at least have the sense to cover their uniforms while flying.