BEagle
I think you are missing the point old bean. Of course you would never wear medal ribbons on your FACS or flying suit, but you do tend to wear the normal badges in the correct places where they appear on other forms of uniform - flying badges on your left chest/breast are a classic example where some sqns wear them on their own with a name badge on the other side, and others in a combined name/flying-badge badge. The Cabin Crew should be doing something similar - a name badge on their chest with the separate cabin crew badge on their sleeve. There is no intent to damage sqn spirit and the wearing of a sqn badge is perfectly fine by all.
On liney’s overalls, I don’t believe that it is a formal Dress standard? So effectively it is managed locally, but the flying gear is No 14 Dress as laid down in AP1358 Ch 6.