4 Cameras?

I probably would have been better off shooting 4 cameras this trip, I quite often had to change out the 28mm and 21 mm lens which slows you down and you sometimes miss something. Another benefit would be having another camera with loaded film ready, sometimes all 3 of my cameras run out of film and I miss a shot, that would happen less often if I had 4 cameras loaded with film. I have 2 more Leica bodies in Canada, a M6 and a M4P so the only negative would be the added weight.