I went to one in Vegas, and within the last year 2 have opened in town. Lunch is like $14, so that is when I usually go, Just no Picata:'( Went last wed, while prepping for class and stayed almost 2 hours, then my wife wanted to go Sun.
I've done it once. It's way to much meat. I wonder how long it takes for the body to digest all that meat from an all you can eat meat binge. Specially if you eat it as a dinner meal. How you gonna digest just meat? I don't think my body makes enough enzymes to properly process an all meat meal in one days time. I doubt anybody does.