I'm playing an evil drow rogue so the last couple pages are of course of great interest to me
My take on my character is not that he's the chaotic spread the evil everywhere and plunge the land into darkness type, simply because that's just not profitable. He's in it for himself, he's morally unbound, that doesn't mean if a kid is about to get run down by a cart in front of him, he won't help, though it is very likely he won't risk himself in the process.
It doesn't mean that he can't have loyalties, even loyalties not based on greed or advancement. The evil displayed by the drow of RA Salvatore or the fiends etc is to me very one dimensional. I'm far more interested in a character who would lie, torture, steal, murder, when it's in his interest, and yet fight to the death standing over the unconscious form of a companion who he values. Maybe you could argue that such a character is neutral, but to be neutral suggests to me that one is actively trying to maintain a balance in their actions.
As for my rogue, I tried to draw on the drow in Daunton angle with the temple of day and night, and left as much of his race's origins as vague as possible until it gets more meat added to it, if someone is working on that I'd be happy to provide some input as at this time I think Step is the only approved Drow in L4W.