First and foremost, the leather is fantastic. I don't claim to be a leather expert, but it has characteristics that I really enjoy: a deep, rich color - more red to it than I expected - a nice texture / grain, and a thick, sturdy feel that's still pliable.
I like the general makeup with a kidney panel and no bands at the cuffs or hem, the collar is well-proportioned, and I'm a fan of the shoulder gussets for added mobility.
Sleeve and body length are pretty well spot-on in an M, and I'm rather tall and lanky (6'1" and ~ 160 lbs).
I like the two-way front zipper, but the zipper pulls maybe aren't my favorite; the lower zipper has a square opening attached to the slider, and it seems to get stuck in odd positions because of this (like going out at 90 degrees instead of hanging down straight). A different zipper pull might not have this issue.
The quilted lining is thicker than I anticipated. I personally prefer a thinner lining and just add another layer if it's cold out.
Unfortunately, the cut through the body doesn't really work for me so I ended up returning it. An M is too tight in the chest, and even if an L was available I think it would be too boxy through the midsection and waist.
In summary, really nice jacket, just not quite right for me, particularly in the fit department. IIRC my experience has been similar with the one or two other Golden Bear jackets I've tried on.