Discussions of special RV toilet paper are kind of like discussions of religion or politics. Everyone has an opinion, and no one's opinion is ever changed by the discussion. But still ...
There are any number of web sites that do the toilet paper test. They all involve putting a piece of TP into a jar of water, giving it a little shake, and watching it to see if it falls apart. The idea is that if the paper falls apart, it is RV safe. And the universal conclusion is that virtually all TP is RV safe, even if it is the stuff you use in your home. And you don't pay a bundle for it.
And yet people continue to spend tons of money on special RV toilet paper. I think the industry is safe.
Here is an example of one such web site, in this case from RVGeeks.com, who seem to know a few things about RVs.
http://rvtoilets.blogspot.com/2012/0...let-paper.html
Bill