They would have to stagger their use to prevent conflict or use them of different days, etc. This has been done in West Africa, among New Tribes users in Thailand, and some users in the Philippines. Flat pictures have a limited life span in constant use in rural environments. Unless printed on card stock, pictures begin to tear along the edges and will get holes in constant use. Unless laminated to protect pictures from insects and moisture they will quickly become soiled from handling.
Lamination adds to the cost and weight and can make certain types of display more difficult.
Also laminated pictures that are tolled up or bent are very difficult to straighten out. The lamination does more than triple their life span, though. This, however, prevents hanging them in a sequence though it does allow one user at the front end and another user at the back end. Three or four sleeves will hold enough for most use. We generally provide flat carry bags, map tube cases or some form of tubular container like a quiver for carrying to protect pictures.