I feel like Kim thinks in first person. That is: I don't think he actually separates his skills in his brain. He still has them, but they don't talk to him like Harry's do, and they wouldn't have distinct appearances. So rather than skill portraits, I think if we were to ever get Kim's POV, his portrait would just change to show which base attribute is being used. Which part of his brain/body he's thinking with. So erm. Yeah. I impulsively did some edits/paint-overs lol.