If we wish to be treated seriously by others then perhaps we should take ourselves more seriously!
Some of the views expressed so far can only help to maintain the view that we are the 'lowest form of life'!
Personally I think that instructors should look smart and professional.
Our students look to us for training and guidance, the least we can do is dress and act in a professional manner.
As for stripes I would be happy to wear them. I am a professional pilot and very PROUD of the fact.
Thankyou for your contributions everyone.
Happy landings
Incog