That looks really nice.
It's interesting that you scored it like that. Was that for presentation or for some other reason?
The only meat that I can think of that I score like that (only not as deep) are cuts like the London Broil, Flank Steak, or Skirt Steak, and the only reason I do that is because they can be tough and I marinate them with citrus and want some of that citrus to get down in there.
The wife bought a pork loin instead of tenderloin so when I trimmed the fat cap I scored it like that to give a little more surface area for the dry rub. On really big loins Iβve scored both sides before.