I've become fixated on shearling, but if I were to have a jacket like this made again, it would definitely be with a softer and lighter leather. Maybe kelpie or goat?@MrProper could you further elaborate on the jacket you posted? What were its flaws, strength? What would you change if you had the chance? It's so unfortunate this didn't work out!
And next there would have to be a wind flap so the fur overlaps the zipper. Should mean that there is then no cold bridge.
So from the principle the construction that is also used for shearling jackets.
I have an Irvin, a D-1 and a B-6 is ordered. That bridges the cold season perfectly until normal leather jackets can be worn again. lol