In the colder months I wear the flying jacket, silk scarf wrapped around my neck (brown and white chequered patter bought from BHM) and a distressed leather cap with nape and ear flaps (bought from Lakeland leather), sometimes a beanie. When it gets too warm for the flying jacket I switch to a lighter weight leather jacket. Flat cap or baseball cap in the summer, primarily to protect my head from sunburn and keep the sun out of my eyes.
I don't think it matters what you wear in the Mog, it's whatever works for you, besides people are going to taking more notice of the car than you!