Right is the way the inventor intended it to be reloaded + it’s easier to access.

Left is the way parents and pet owners need to reload it + it’s harder to unroll by accident (or by purpose) good number of times.

Out of frame on the toilet basin/counter is the way people who don’t have a tp holder or don’t care to refill it put it.

The bidet is what we use personally, way better for the butt health and probably better for the environment lol