I like it. I feel like it blends together in a way that causes it to sound more like hard DnB than Dubstep, but that isn't bad at all. I actually think the potential you have with it is pretty great. Build on it a bit more here and there, and it would sound more epic. Put in some sick bass drops, and it would be awesome.
The bass was pretty sick already, but I'm talking about bass drops that could only be described as "the noise you hear when a giant pulls the moon out of the sky and then slam dunks it into a volcano with all his might." Put something like that in, and I would give this a 20.