That's almost exactly what my dd#1's WISC-IV scores looked like at 7.5 except her VCI and PRI were the flip-flop of your ds's. Her PSI was also lower than your ds's at the 42nd percentile I believe.
How was the spread w/in subtests? Our dd had wide ranges within subtests. For instance, while her PRI total was at the 95th, within the 3 tests that made up that subtest, she had scores ranging from 25th percentile to 99.9th+ percentile.
Dd is 11 now, so it has been a few years. I would not describe her as a 2e kid (gifted with a disability). She is gifted and she isn't the fastest processor. She has accommodations for extra time and a quiet testing environment written into her ALP (accelerated learning plan) at school. She hasn't needed the extra time all except once last year on one math test. Even then, she said that she only needed about an extra 5 minutes. Just the anxiety reduction of knowing that she has that time has helped a lot, though.
Overall, like Dottie, I'd say that it doesn't look like a concerning pattern nor an uncommon pattern for a gifted child. The psych maybe should have figured a GAI (general ability index) for him as well which drops the WMI and PSI indexes b/c of the discrepency. B/c his scores were very similar to my dds', I'd expect that his GAI would fall around the same point, which isn't that different from the FSIQ. You can access the charts for GAI online if you have the subtest scores. Google "WISC-IV technical report 4." His GAI will likely fall around the mid 130s, though with those percentiles.
