I tried it for the first time last week. I can see what people like and dislike about it.
I was standing up, but I guess it was too firm, because once it hit the back of the diaper, it just would not go anywhere. (A probably unhealthy level of) straining got a little more out, but in the end, not all of it came out.
When it was in my diaper, the smushy feeling did feel good. It wasn't as warm as I'd expected, though. I kind of wanted to keep it on longer, but eventually the whole "This is poop you're getting all over your butt and into your lady parts" thing got to me. I just feel like I'm getting bacteria in places where it should not go in a woman. If I were a guy I would probably enjoy it more.
The cleanup was hard. I don't own wipes, so I used toilet tissue, and it clogged my toilet XD But to make sure I got everything clean, it took so much time and toilet paper and paper towels.
The smell didn't bother me that much, but it did make my whole condo smell weird. I was surprised. I could only smell it a little when it was in my diaper, and it wasn't overwhelming while I was cleaning. It seems to smell a lot worse when I'm using the toilet, which is interesting. A quick Febreeze afterword did the trick.
All-in-all, I think it's something I'll do again, if I'm in the mood, but not on the regular. It is nice to not have to take off my diaper every time I have to go.