If they are Cherry doubleshots, then the F and J concavity you feel we call scoops. A lit of people, including me, prefer them to dots, lines, or any other thing on those keys.
Also, with the same caps, when the texture is worn from them, they become shiny and somewhat slick. Again, some people like that feel. I don't mind it. But many more don't at all, and prefer the texture.