It sounds like I've been missing a trick by not taking Metamucil. I've started taking it over the last few days and the difference in output is crazy. @dlewicki it is similar to pre-pouch days!
@Scott F I love your idea of uncoupling peeing & pooing so I'm also going to try that! And good point about doctors probably not knowing. I think now might be a good time to touch base with the Familial Gastrointestinal Cancer Service group here.