Yeah, this seems to have not been properly released yet (at least there is not much to be found around the web), but the youtube vids I found sound amazing and I'd love to build one for our bassplayer to replace his bass-muff.
Oh sorry, no I don't have one. I just listened to a few videos.
That said, the audio quality on this video isn't amazing, so maybe I shouldn't have judged so quickly. I do wonder how it sounds with down-tuned guitar.