Ok, I just talked with him. He's accepting anyone/everyone.
Sign up here if you're interested! Mostly_ - I already got you down
Oh, and I should add that we plan on having a tournament of our own soon. Not sure if it'll be open or closed at this point - Naruto might have more details.
And be sure to post replays of your tournament matches when you have the opportunity.
I didn't sign up because, well, I'd get steamrolled, but I'd be interested in spectating matches live if that's permitted (though I would understand if they didn't allow spectating).