For what it's worth, I played a "grey" character. I didn't try and stay light side but neither did I try and become dark side. Think a "dirty harry" style character , fear is his primary weapon coercion is his social skill of choice, and while I stay above 30 morality most of the time, a particularly nasty interrogation did drop him below the 30 mark, and once you start using dark side pips by default it's easy to stay there, and all this from a character who uses violent actions as a blast resort and uses precision strike to keep as many people alive as possible, wouldn't think twice about holding someone over the edge alt a cliff to find out what he needs to know.