Indy Gear
US Wings
Goat is my bar-none-favorite leather, it's soft, drapes beautifully so it looks great, and is tough as nails, far more durable than cow, or lamb, as good as horse but with the perfect amount of grain (horse is sometimes so smooth it looks like vinyl.)
I have a jacket from 'Wings, linked above. It is the finest garment I have ever owned. I got it to replace my previous leather jacket (cowhide) that I had worn daily for 15 years and that was beginning to come apart. -Best clothing move I've ever made. I had actually ordered from Wested, then got cold feet and cancelled. The Indy link above has got lots of info on Wested. It is my understanding that their quality control is back on track and their workmanship is excellent. At the time however, what I read seemed to indicate that their customers were either thrilled or horrified, no in betweens. The latter would order one thing but get something totally different, etc. and the wait was often months. I got my goat in a couple of days and the quality is second to none. The 'Wings Indy jacket is really a Military grade A2 jacket, as used by the USAF, but cut in a different style. All fasteners and stitching are milspec, etc. And the Sarge is a pleasure to deal with.
By the way, I'm in the NYC area, and this is my 3 season jacket. The goat is a lighter weight leather than cow and not as warm. I'd guess that an average person would probably be comfortable 65F down to 30F. Again, that's a guess, I'm a cold weather type, so I wear mine regardless. As long as you're not hunting from a treestand, you should be fine. -Leave the house, get in the car, heater's on, drive to work, get out, walk inside; the average person would have no trouble.
Hope this helps.