I've had an Omega PO, Panerai and Mont Blanc from Josh at PC over past couple of years. All models were high end, good quality, with good service and prompt delivery. Had one issue with MB bracelet, it was sent back and returned fixed. I would say you can buy with confidence from him, but email him first to ensure the model on his site is in stock.
Can't vouch for the FM specifically, but the adage of you get what you pay for holds true even for different grades of reps.