Well, big surprise, I would suggest using a Dozier. The small models are perfect for caping, plus useful for other jobs as well, they cut better than the rest, hold an edge, look great, and have top notch sheaths. They won't break the bank either, at around $150 for most hunting styles.
If you want to stick to less expensive production knives, a friend who harvests caribou, around 100 per year, swears by the trout and bird model by Grohmann, for caping, skinning, gutting and everything else.
BTW, as per your question re the Kodi-Caper, by Outdoor Edge, I find it uncomfortable when choking up for delicate work. The finger cutouts are sharp, and the knife likes to roll onto the flat side between your fingers. A little too akward for me.
Scalpels work fine too, but they look pretty lack-luster to me.