At Scampton, OC35 found a way around the collar in/out / with/without tie problem for the woolly pully - he didn't bother with a shirt.
617's pilot leader joked that we should wear wings on our woolly pullys - someone in the Air Box took him seriously and that's why the order came out requiring us to have them stitched on...
Unfortunately the smart barathea No2 had been replaced by that dreadful Thunderbirds jacket thing, so most people went for the woolly pully + giant moth option.