Joe, I heard one of these setups BRIEFLY about two weeks ago in an SME 30. Associated equipment was equally high-end and my listening session was ever so brief, but it sounded GREAT!
As I understand it, the cartridge is a joint venture of sorts between Transfiguration and Graham. Apparently, the cartridge is pre-aligned at Graham and permanently bonded to Graham's ceramic arm wand. The leads are soldered directly to the cartridge (no connectors). I further believe, though I am not sure and could be mistaken, that someone who has a Graham arm can buy the wand and cartridge package and use it interchangeably with other Graham wand/cartridge combos. (?) I would have interest in hearing the impressions of those that have given the Nightingale a more substantial audition.