You know what would make even more sense? Searching and reading on gem choices then running a sim to decide for yourself.
So with spirit taking such a hit in T10/ICC gear, should I be gemming my blue slots with Runed Cardinals instead of Purified Dreadstones? Outside activating a meta of course. It seems like it would make more sense, especially with 3.3.3 basing LTs off SP vs spirit.