@jschmid I agree with Alex. These are two rock and roll awesome jackets, but different.
The difference I find between the two - beyond the look and vibe - is that the horsehide takes time and wear to conform to your body. Body armor that needs to be broken in and develops quite interestingly in the process. The horsehide repels rain super well. It is not an "insulator" in colder weather, however, unless you have a UHF or warmer base layer underneath. Flexible though, as a t-shirt underneath works great too when the weather warms up.
The split steer is supple and super comfortable from the beginning -- and very warm in cold weather. Heavy as shite and substantial. I dig wearing it for the comfort and obviously the look. "Drapes" more with body movement rather than the horsehide that conforms to your body, I find. The split steer seems to me that the cut is overall a flattering cut for a lot of guys' body shapes. Super warm in colder temps, but pretty breathable. It has solid wind resistance, but for rain resistance, best to spray the jacket.
They both can take a lickin' and they age completely differently due to the hide difference. My brown split steer is a super comfortable patina monster that collects your life experience quickly, while the tea-core horsehide is an armor that develops a beehive of cool honeycombs that tea-core with extended wear.
What they have in common is that, with either, high probability that you can make it out of the kitchen of an angry, cleaver-wielding wife situation relatively unscathed. 










