Leather, nakedness and commuting

[bwizz]

I had a  low speed of this year , I was wearing waterproof heavily armoured " especially around the kneees" Jeans .I had of often thought,(What is the likeliyhood of having an impact right on the armour) Van turned right across my path ,hitting my left knee with his front wing! my knee came up like a baloon and took 5 weeks to regain colour and shape.
How bad would it have beeen with shorts ?