M.R.
If he is not experiencing writing difficulty or pain, his handwriting is funcitonal and his grades are good, then I don't know that there is an issue here. There is a pencil called a Twist n write and a pen called Penagain that are shaped like a "Y" that force the index finger into a tripod grasp. You can find them online, and sometimes at office supply stores.
An occupational therapis is a good resource if you think that there is a disfunction. He will not qualify for school based service unless he already has a qualifying diagnosis for IDEA and needs special education and needs the related service of OT to be functional in the classroom also. Private OT's are available to help you if you want to maximize his potential, the grip may overwhelm him as the demands of school move from learning to read and write to reading and writing to learn. I would have his speed checked, personally, and make sure that he stays at the high functioning level he is now. Unless you have left a great deal out of your concerns, this is not going to be a school concern.
As for empathy, that is a judgement call on your part. If you have left out other quirks about your son, especially if he has an intense interest in one thing (and a tendancay to monolouge about it) social reciprocity issues, a preference for younger playmates and adults over peers, a tendancy to miss nonverbal communication, gross motor clumsiness, sensory defensivess, ridgid beahvior or a litteral thinking pattern that you have not put together with these other two question areas, you may want to explore a developmental evaluation.
It is not uncommon for parents to miss very high functioning ASD's, especially went the child is still doing well in school. You absolutly want to identify an autistic spectrum disorder if it exists because at his age, he is about to leave the concrete stage of learning and will soon be faced with many challenges that will require accomodations, even if you have to supply them yourself if he is functional in the classroom and doing well.
A neruopsycological evaluation would be a good place to start.
M.