Yes, I myself have dealt with him, and even though all I bought was a waist level finder, it came exactly as described. I'm just curious as to how the flexarets work because my Pentacon 6 (not bought from him) has one foot in the grave already, and I'm looking for alternatives (yashicas, rolleis, and flexarets with 4 element lenses). I figure that if the flexaret has good lenses and advance mechanism, popping in a Satin Snow ground glass shouldn't be too hard (if it needs it).
Not that I'll purchase a camera any time soon, I still have a good chunk of negs to print from my last project...