All that trolling from the SI aside... you can actually play him with enormous depth. Ex slave that will do everything to never be put down again, or see others brought down to the low he came from. "Slave" being a major berserk button.
I actually prefer the light side Inquisitor. The way he can trash talk all those social darwinist Sith and Jedi who think he is evil by default... epic.
I love delivering the verbal light side smackdown on Alderaan to that jerkass Jedi with a stick up his ass.
"I have more light than you'll ever have... and I love"
Or telling Zash to go to hell with her sugarcoated dark side lesson in the temple:
"Like the Sith Code says: 'My chains are broken' I can choose my own path."