I've not seen a pistol finished with Ford's "Master Blue" in person, but I just looked at their site and, if it were mine......it would never be put in ANY Kydex holster unless leather lined. Garret Industries comes to mind. Even then, it is going to show some use wear. I have several blued 1911s, none finished to that level of polishing before blued, and I only use them in Leather holsters, most of which have a separate leather lining.
I think I would shoot one more class with the SPO1 and only take the Master Blued S2 with me to "show it off."