What I will make clear at the outset is that I have never had any dealings with Camera Leather.
I recently needed to re-cover a Canon SIIb. Camera Leather's price for the covering was $48, and they offered the service of re-covering at $75 - the total without shipping would have been $38 more than the camera cost me. Looking at their pictures of re-covered Leica screwmounts and screwmount copies, the replacement covering seemed too thick in places, standing proud of the metal trim, and had gaps.
I elected to cut my own leather and install it myself.