Thanks for everyone's participation! Looks like 2 or 3 cameras loaded at one time is pretty common. When I'm keeping things lean that's about right for me. Usually it's 1 camera with 100 iso color film, 1 camera with 400 iso B+W film, and 1 Polaroid camera loaded up with either Fujifilm FP3000B or FC100C.
By the way, I forgot we recently purchased a Fujifilm Instax 210 for a birthday party earlier this summer. It now sits on our kitchen counter loaded and ready for the occasional family shot (this morning it was my 3 year old wearing mom's reading glasses). I guess that makes 9 for me!
I like to shoot candid / decisive moment photographs and I think this is one reason I end up with so many loaded cameras. It works well for me to have loaded cameras with me and/or around me all the time so I'm ready to snap when an image presents itself.
Pikapig: Agreed, I really enjoy getting older rolls back from the lab and their associated surprises.
axiom: I would be inclined to count each film back, but having never shot using film backs I really couldn't say? Up to you…
Thanks again for all the votes! I was curious about this issue...
"The enemy of art is the absence of limitations" ~ Orson Welles