It's all about image for aircrew, they love parading about in flying suits thinking they are something special.
What is the big deal with the brevets since they changed to generic Wsop? a load of the engineers went harpic and wanted to only wear the old "E" brevet same with the Alms! Nobody is going to forget what job you do on the plane cos you have RAF below your wing instead of Alm or E.
Image!!!!