I bought a fitted and measured, thick cowhide jacket at Pop's 13 years ago, and flew with it every flight since then. Yes, I even flew with it when ACC told us we couldn't. It has as many combat hours and almost as many combat support hours as I have.
I am (was) a B-52 guy, and am heavily influenced by tradition, and not that tradition that each CSAF and CMSAF tries to make up every time a new one comes in. My forebears wore leather jackets when they flew and died over Europe, and I wore mine over Baghdad during OIF.
My jacket looks used, with leather wearing off in the usual places. It has a few nicks and cuts where my plane bit me. It does not look like it's brand new, like some of the jackets worn by personnel who are in a more comfortable setting that are now issued leather jackets. When I did that job, I did not get a leather jacket, but the blue Gortex jacket they gave me served very well.
Every blues day during winter, I proudly wear my leather jacket with wheel cap. On my final day in the Air Force, I will rip the stiffener out of my wheel cap and crush it, and will put on my newly modified jacket with nose art, mission bombs, and old bombardier wings on it.
For that, my friends, is tradition.