I've been to the Japan Expo in Paris with @Acnologia today, and there was a conference about Drifters.
The beginning was awesome, we saw the OP for the upcoming anime (first in the world to see it : D), and it was pretty great. The animation is funny and surprising, but damn, the result was really nice.
We've also seen the first episode.
And then, there was the interview.
It's awful to say, I know, but Hirano was bad. I don't know if he lacked sleep but he seemed SO bored. He barely replied to any question, his editor did most of the job, and he actually asked for the interview to be shorter. He didn't care at all for the public (there was Mashima too today, and that was SO ENTIRELY different), he only spent his time bowing while coming on stage and leaving the stage.
The only thing remotely interesting he said during the interview was that he had to think a lot lot lot about the story of Drifters to make it right, and he had to think so much about the Black King because he wanted him to be evil incarnated. That was it ^^
Oh and Drifters sells twice as much as Hellsing did in Japan apparently. That's what he said (or at least what the translator said he said).
Also... he didn't look at all like I expected.