Hello Jerry,
It is possible that the pattern is impressed on the leather and I am curious to know of the technique to obtain the random 'grain/corduroy' pattern. I suppose that this type pattern is applied for better grasping and to some some extent decoration. The leather is definitely thinner and matches closely soft patent leather.
I am including an image of my carbine scabbard and thanks for your knowledge and advise.
Cheers,
Albert