Sattva doesn't suck, it's still a great PLD ring, it simply offers less notable benefits to it's intended jobs than the other two rings. This is great for unconventional tanking that many people enjoy but won't pick a different CoP ring for, twice the enmity of the only other All Jobs Enmity ring (Mermaid) this will shine, more for RDM who need to work a little harder to take hate without blowing all their MP at once.
I believe this to be a most viable addition to Provoke, Flash, and Sentinal macros. Maybe even Invincible, if you are wise and put the macro on a row by itself 2 or 3 rows away from you primary macros.