No, I'm not going to use it to pose around the airfield
yes you will!!
But seriously, I'm quite surprised that the hang gliding/microlight community haven't solved this problem with some sort of padded windproof overall maybe?
If you get a sheepskin jacket, don't you think there';s a chance that your bottom half will get cold?
I bought a padded sweatshirt for birding and that worn under a Barbour was excellent, totally windproof and very warm.
PS Theres's no chance that you could get mistaked for an Arboreal Bornean Primate, your hair is the wrong colour. But a Gorilla, now thats far more likely.