Having met three "composters" on a recent trip, I sensed (scents?) not all were totally happy with their decision. The "whole black tank thing" is really no more than "the whole gray tank thing" with the exception of connecting a cleanout hose if so equipped. Connect to drain, open black valve, close black valve, open gray valve, close gray valve, pack up and go. Composters need to waddle through the campground to empty their pee tank every other day or so, as well as emptying their "compost" every month or so (which can vary from carrying out a drawer to hauling out pretty much the entire toilet). In addition, much of the coir used in the compost bin travels from the South Pacific to a Nordic country, then to the US. Perhaps not as green as it first seems. While investigating composting toilets as an option while we had our Oliver
, I was disturbed to find a "you gotta do what you gotta do" attitude among some (not all) of the folks with these toilets. As in emptying gray water and pee bottles in the woods by the campsite. May be ok in some BLM and NF lands, but not OK in state and national parks. Could be a great solution for your needs, but I recommend that you investigate all aspects of use and ownership beforehand.