Creature of Chaos? No. But it is a whip that is dark in its origin, and like somethings (and people) with that come from darkness, it isn't necessarily evil. Just look of Alucard. He is dark in nature, but not evil. As for the whip being holy, I have to say that it is a vampiric weapon that is effective against vampires and all related to them. Sort of like fighting fire with fire. Its vampiric nature also accounts for draining the life from all non-Belmonts who wield its full power. And, as some of you know, my position is that after the ritual that completed the VK, Leon became part vampire and all of his descendants are as well. Thus, making them immune to the side effects. It's also why the Belmonts can't swim and why they are the strongest vampire hunters. Again, fighting fire with fire. And, before you say "but they use holy power", I'll say this: anyone can wield holy power with the right items. Hell, in SotN, Alucard can wield holy weapons and he's half-vampire.