I've never seen anyone wear the lightbulb.
Even fat matelot chicks in the SPAG wear wings instead of the lightbulb.
Me neither. A mate of mine who passed AAPC got his light bulb at Brize. He told me he felt gutted, as the guys stood next to him got their blue badge of courage. He still wore wings back at Bulford, though. None of our ex 216 or 264 seniors or officers ever said anything to him, though.
No idea if he went on to serve at 216.