I'm interested in this too. We decided to pay extra for full AKC registration with Blue not because we want to breed him, but because we're going to wait to neuter until he's about 2 years old. If "he" were a "she" I'd do it before first heat, but with males- I'm not sure what the benefits are, at least to neuter very young.
I have read that it can cause Prostate problems in later years, but that's all I know.
It turns out I'm bringing him home Sunday. I also made a Vet appointment with him for Tuesday (the vet does house calls, sooo happy) so will discuss this issue with her as well.