You do have to wonder why people write these regs with something that is so out of step with the modern world. I didn’t wear a tie for well over 30 years in my old job as attitudes changed and now in a school male teachers in a tie is not mandatory.
This I imagine is something that in the RAF no one actually cares about. As far as I’m concerned sticking a jumper over a short sleeved shirt shouldn’t require the wearer to put on a tie. The regs state that shirt sleeves aren’t to be rolled up, but as a cadet I always used to when writing so as not to get ink on my cuffs
How many people wear a proper shirt and or tie day to day in their real lives? I haven’t for probably 35 years, since dress down Friday became every day, and only worn a proper shirt with or without a tie a handful of times. You could ask the same in the armed forces, I can only think of seeing a handful of people on camps wearing both. How many wear a jumper unless it’s cold?
I do find people’s antagonism to other people wearing a tie odd. I wear a tie for work, but not the rest of the time. This isn’t unusual.
Personally, for RAFAC stuff, I think at the rank I’ve reached it’s appropriate I wear a tie generally, so I don’t often wear a short-sleeved shirt. Others disagree. That’s life.