NO.
Yes.... but no.
What you do is put a different gem in each slot for gear with more than one. If you put in 2 mastery gems it will only give regen as if there was one gem. If you put 1 mastery and 1 vers in a two-slot item you'll get regen for
both.
"Optimal".
Your revelation only works because you're bumbling into having a different gem type in each slot, but it is NOT dependent on using the utility gems there. If you can manage 10 two-slot items you can get full 2 gem regen for all 10 if you just dont put two of the same gem in any single item. As little as the SL stat gems are giving, it's irrelevant which stat you choose anyway...
Just use a different color SL gem in each slot on multi-socket gear. Full regen. Easy peasy. Go have a ball.
edit- if you absolutely
must have only 1 gem type on your toon, then yes, Do it the way Wrongalot explained. That'll do ya.