I really like the concept of it, but I don't like how the text was text was thrown in, and the general placement of the "character" in the signature. Would rather have it the "characters" placed more to the right/middle and not just straight in the middle.
I'm also not really into the boxy shape of the sig, I'm really really into the concept of what is going on inside of the signature though and I'd like to see it continued.