My son did not want to grade skip because he is so passionate about sport (he is subject accelerated). It had nothing to do with scholarships as we don't have the same system in Australia. It has given him wonderful age mates that have no issue in accepting him for who he is, in fact they embrace his giftedness. I found this pathway the best for our son due to the fact that most of the gifted extracurricular programs here were of no interest to him and he didn't seem to 'fit' there either.
Is it more unusual to be gifted and your main interest (outside of academics) to be sport???
This is just our personal experience.