I use a porta-potti in my 16' cargo trailer camper that I built long before they became commercially produced. It's very covenient. And, it tucks under the counter out of the way.
I carry both Honda atv's in it. I have had the two in the camper, one in the bed & one on the utility trailer behind the camper. God bless diesels.
For two hunters it has been simply great since 2003.