There is definately a time and place for yellow jackets. In the bar is not one of them and as for wearing them in the plane!!! What can i say.
However I do wish that more people would wear them when walking around live side. At Duxford there seems an awful lots of people relish the thought of being hit by a prop blade because they cant be seen.
So dont slag the yellow jackets off all the time... sometimes they are needed.