I loved playing Grey Warrior with a LS lean. I envisioned him as something of a Samurai - one honorable, loyal, dutiful, somewhat arrogant and entitled and prepared to do what is necessary, if duty demands such.
Turned out great. Much more depth to the story than the "Stupid Evil" Dark Side, or "irrational wuss" Light Side, both of which I played through in Beta.
Same here (except I haven't explored Dark-side and Light-side paths beforehand in beta). Very interesting story when following this path (and doesn't suffer of any inconsistance, or illogic situations).
For the Inquisitor who I'm still in Chapter I, I don't see anything else working other than Dark-side (not inevitably 100% Dark-side, I find that some Light choices are sometimes wiser for my Inquisitor who is a kind of master-mind, and so allies are easier to manipulate) because the story itself is much more self-centered and about ambitions and power... So playing Light-side or Grey as Inquisitor seems abnormal to me.