When we bother with the TP roller thing, it's "over."
Most of the time it's just sitting on the counter next to the potty. (Our roller thing is located in a very bad location, right next to--but slightly behind--one's right elbow.)
I'm curious...how many just crumple the paper and wipe, versus how many neatly fold it into a multi-layered square (which is what I do; less likely to find an opening if you don't crumple it)