I think the problem is that most guys here have multiple jackets Burt and flick them off in short order or don't put the hard wear in to them.It’s a beautiful jacket for sure , and I’m not trying to put a down side to it, but I’d bet that jacket is at least 25 or more years old to have developed that nicely worn look. I like goat jackets and they do look outstanding over time. It’s just that they take a bit longer to get to that stage . So for me, it comes down to being fortunate enough to have one of each , a horse and a goat .... BINGO!!
There's no doubt that goat needs to be worn to develop what you see in Mike's jacket above. If you're one of those, have two dozen A-2s kind of guys and wear each one once every two years then you won't get the wear in you need to.
Goat will weather and develop patina, even chrome tanned stuff with the heavy top coating but it takes time and dedicated wear. I have a pre release WPG A-2 (why oh why didn't they make the actual release jacket like this) in chrome tanned goat which I have worn really hard for what probably amounts to 2 years non-stop wear. Now it's starting to do what Mike's jacket has above, in terms of the graining, wear points and top coat wearing through.
It doesn't take 25 years to do this even with hard top coat finished chrome tanning but you do need to wear a goat jacket hard and non-stop for a couple of years real, hard wear and especially if it has a hard top finish. AVI LTHR jackets for example have a top coat which wears very quickly so no drama there.
The idea that you need to wear a goat jacket for several decades to develop wear and patina is just wrong. It will probably take more than a HH jacket especially for one of those with a thick/hard finish but regular and hard wear of any jacket with develop wear to the hide, even goat.