Originally posted by UCanShootMyNovaYou're right on that account, but using a Force power and being aligned with that power's respective side of the Force are different things. It's like Kyle Katarn using lightning, he's aligned with the light side but uses Dark Side powers; Revan was similar.
As far as I remember he was drawing on both the Light and Dark equally letting them flow through him like a channel. I'll find the quote though just in case.
Then you're getting into the realm of speculation like whether or not one's philosophy affects your power in the Force, your ability to use certain powers and of course, what we're debating here and what was recently brought up in the Maris vs Bastilla thread, how nexuses affect you. We just don't know. Considering Revan had just regained all his memories after donning the Revan mask and that he used abilities which would have forced him to draw on his rage and anger I'd say he was pretty much standing on a knife edge between the two at that point.