Somewhere, some time ago, someone asked about the correlation of giftedness and sensory integration problems. I posted that there was no correlation to sensory integration disorders but that there was evidence that gifted kids have more tactile defensiveness. This was from some information I got from a researcher named Rich Carrasco who had done a small study testing gifted kids with the SIPT assessment.
I just today found this summary of research/literature review:
http://www.spdfoundation.net/gifted.html(scroll down to the "our library" link to access the PDF file - I couldn't get the link to that to copy)
Interesting to know that someone in OT is looking at this issue. But also interesting that the author basically said what I said - there is much confusion between OEs and SPD!