Originally I was going to have the shower/toilet all in one closet.. But the toilet I will be installing is electric and doesn't like getting wet. i pondered a few ways to incorporate the slide into the shower wall, but since I had plenty of space on the other wall below the hanging closet, I just relocated it.
No holding tank, water, or plumbing required. It's a glorified camping toilet, honestly. By all accounts, no smell (which I know a lot of compost triolets claim but I can smell them on the rigs and sailboats that I've toured). And it's no more expensive than the highend compost toilets. It does require refill cartridge's but it comes out to about .50 cents per crap. Well worth it to not have to deal with smell, no stirring shit (I do enough of that on the Internet), no dump stations, etc. When it's full you just drop the bag in a trashcan outside Chucky's camper and off you go.