Rina This is what concerns me the most when it comes to thoughts about wearing belt. Chain back would help a lot I guess?
I wear a cable version and poo is possible, but it is a big cleaning effort. I truly try to only do it at home where I can clean the whole area in the shower afterwards. It's possible everywhere, but then cleaning is very time consuming and I clean the area again in the shower as soon as possible. It's very important that you don't miss anything there. I think it's easier with the cable version then with a chain version, but of course I can't compare.