I would absolutely give the OT all the information you have about how your child functions, things you have noticed that he does well and things that he has difficulty with. My son's primary OT told us flat out that my son was very adept using his intelligence both to compensate for some of his deficits and to avoid tasks where he had to use those areas where he had difficulty. If she hadn't known beforehand how bright he was, she might have been really puzzled by what she was seeing, because he didn't present like a typically-developing 5 year old, but he also didn't present like a typical child with these disabilities, either.
