Haha... answers
I've got such a collection of riding gear over the years, I just wear what I want to wear now in my collection.
Otherwise I end up buying new Summer and Winter gear for every new bike I own, just to colour/style match. Literally run out of space (and I've sold loads already).
I see pics of textile suits (some expensive like KLIM £2500), and I've been down the road on textiles at 40 mph, they get shredded beyond re-use. So it gets expensive if road surfing during winter.
Leather is more durable and protective in summer, so I wear leather on my GSA now.