I work predominantly with large format (since 1986) and used to carry a Leica as well but found I wasn't using any of the images/negatives. Now I carry a TLR instead and found I love the square format, and also have a 6x17 camera. At times I carry all three when I think I may want to shoot Panoramic images.
Here's examples where formats are important, all shot at Aphrodisias in the Stadium.
All full frame.