Well, as I really can't be bothered to look up the designators, I don't know where you are all flying. And I don't really care what you wear. I suggest that you dress in accordance with the risk you see, and leave off the nasty hi-viz melty strangly stuff. Personally, I like jeans and a cotton tee shirt. Comfortable, tough, cheap. Doesn't melt. Works with gliders, aeroplanes, and balloons. Bars, yes, certainly. Mine serves Bombay sapphire and fever tree tonic.