Hey, all
I got a two-inch brown leather strap, which is stamped with the Alembic logo, with one of my Series basses and haven't used it. From what I can tell, the strap was never oiled or leather-conditioned and so was pretty dry and stiff when I received it. I tried working most of a can of saddle soap into the strap, which helped, but not much. More recently I treated one end with the oil I use on my fingerboards, which softened and darkened the leather.
If anyone wants it, shoot me an offer.