I've worn one on and off since my teens. I'm 46 now. I suspect I've often looked a bit of a tw@t but don't particularly care!
A flat cap made of stotty would be a risky proposition in rainy weather, especially if filled with ham and pease puddin’ As you suggest. There’d be no eating necessary as the pease pudding would dribble down the face and take on the appearance of a hipster beard.If you make a flat cap out of a stotty you can have a flat cap and lunch in one especially if you fill stotty with pease pudding. Eat the top off stotty and impersonate a ginger