That's Pat O'Malley's organization. I met him back in Cebu in 2000. I believe he's the head of the Black Eagle Society, so to say he's tough might be an understatement. As far as I know he's about as authentic and legit as you can get. He's trained under various masters in and outside of the Philippines and holds multiple ranks. You can probably figure out all you need to from his website:
Pat is a great instructor, with a lot of experience in both the tournament world, and the more traditional side of the FMA, trained with him many times before he moved up to Yorkshire, you won't be disappointed. I'd say go for it.