back when i did my initial training in south africa all the pilots/instructors wore flight suits, whether flying their pumas to do relief work or their 22's doing photo shoots, and everything in between. everyone thought they always looked very professional and, perfectly suited to the job (excuse the pun), i agree, they looked much more professional than some people i have seen flying in the uk with aweful cheap looking, badly fitting, black trouser/white shirt combo, (although i have also seen suited pilots looking very smart). i'm all for the flight suit, especially for the added safety