Slightly off topic, but one thing that makes me cringe is pilots/instructors/students wearing hi viz INSIDE an aircraft. Or posing by the aircraft for a pic after 1st solo/QXC/skill test pass looking like a couple of extras from a Village People video.
Yes, of course, wear hi viz where needed/required to on an airfield but pls take the darn things off when not. I come from an industry where hi viz really can be a case of life or death.