" sheds no light whatsoever on your donkey jacket assertion."
I suggest that you look at the piccies. There is one of him at the Cenotaph looking like an out of work navvy.

and more on corbyn's boots
"Two centimetres of snow in Westminster provided excuse enough for Jeremy Corbyn, leader of Her Majesty’s loyal opposition, to arrive at the set piece event of the political week (watched by millions around the globe, the premium export of British democracy) in hiking boots. Yes, he actually wore a pair of grey, rubber soled hiking boots on the frontbench. Ugg boots and an ‘El Gato’ onesie next week? Spats? Clown shoes? Bowling sneakers? Summer’s on its way: sombrero? Why not get into the spirit of the upcoming World Cup and pitch up in full Venezuela strip? Or how about a mackintosh, trilby hat, sunglasses and a newspaper with eye-holes cut out?
On retracing the route from Corbyn’s office on the Parliamentary Estate to the Chamber of the House of Commons. 99% of that route is inside, under cover, in halls carpeted and heated at your expense. Snow-booted Jez took around five steps exposed to the elements in the course of passing from one palatial building to another – but it’s a path, not a Himalayan pass strewn with the fallen corpses and discarded oxygen bottles of weather-beaten climbers."