Wrote directly. From one came out-of-office auto-reply, from the other nothing so far. Will wait.
BTW, Thurston says Aero does not allow any modifications to their military jackets but on the Aero page they offer different customisations, like thicker lining, zipper choice, etc..
Yes, but no detail change to the design. I had tried that before and that's how I know.
If you want a custom design and really thick shearling, check out the thread on fivestar.
The shearling is really nice and you can configure the jacket the way you want it. Delivery time usually 3-4 weeks. At Aero you probably won't get a shearling until early spring at the earliest, because they don't have that many people making shearling jackets. Unless you get lucky and find one that is in stock.
Due to the pandemic, I waited around 10 months for my Aero Irvin.