JH - I have an NAS tradition of always considering a leather jacket. Not in recent years, but I really miss a deep blue in my small assortment.
One of my first NAS purchases was this, which is still in my closet and still gets worn. Of course the label is gone from the cuff but I never did unsnip the sewn-shut pockets. To preserve the lines, of course.
As I recall, there was also a Marc Jacobs leather but I'm having trouble finding it. Will keep trying.