I was texting his mom this evening and chuckling because I was describing George like a sarcastic teenager. With the Come command he almost seems to purposely over-act it, running right up and sticking his head between your knees in an effort to say, "there! I did it! I came back. Can I go play now?" But he is at least not blowing his handler off as much anymore.
I always enjoy working with George. His owners are very attentive to his needs and so they are very interested in doing his training right and making sure it works well for him as an individual and so even though he isn't as strictly trained as a working dog he has good focus and while he is a pretty independent dog his work ethic is nicely developed for such a young guy.