I had Langlitz in mind. I know there’s an upcharge for cow over goat etc.. but in Aeros case that’s absolutely true. I believe Schott does it too but they are not in the same category of makers. Since they are great off the rack but not a custom like these higher end tiers. These rambling never ending discussion are enlightening and fun. But as many have said a lot here it the jackets use and personal preference. I’ve seen your jackets and you definitely prefer heavier. Haha. I’m more towards mid weight. Light doesn’t feel right and super heavy has its place but I cant do it regularly.In Aero's case the lighter vicenza is actually more expensive than the significantly heavier CXL. I've not seen any maker charging more $ for a finished product based on hide weight/thickness...