Of course not the most dignified subject matter.
I wonder about (and fear) the potential for collapse as well... that's why I was wondering if anyone had experience with it. It's just so danged compact it has appeal for the few times when I'd really need it.
As for the night time #1... an old Nalgene wide mouth bottle (clearly labeled) serves as a decent beer removal and containment vessel in the middle of the night.
I'm looking for a loo for the van to avoid crappy (pun intended) weather runs (hopefully not) to the campground hoozit (usually disgusting) or worse, the dreaded cat hole in the dark with vengeful mosquitoes and no-see-ums. The collapsible thing uses the equivalent of Wag Bags (probably any brand would work - it appears small enough).
For hiking, I just stumbled across these while searching for options (can't recall... it may have been someone else on this forum mentioned it... or maybe at Expedition Portal): http://www.biffybag.com/
All kinds of fun!