I think Ichigo is just giving in to his will to fight. He has always been saying that he doesn't really like fighting, but in this fight he's kind of going fuck it. I'm going to enjoy this.
Thus you get a better hybridization with his hollow, allowing him to keep his mask on for longer.
Bottom line is that He's trusting the hollow side more and more. The hollow is leaking more and more of his reitsu type (more I guess menacing than what Ichigo's normally is and of course hollow feeling). Thus you get Halibel saying it felt like a fight between espada.
Bullet Tooth Tony: You should never underestimate the predictability of stupidity.
Reporter on Titan Maximum: Sasha is there any connection between your poor album sales and the fact that it sucked?