But these were not 'lecrasans... there were macerators base heads, with holding tanks that had to be pumped out later. There were macerators built into the base of the toilets.

How do these differ from manually pumped heads? I don't know, frankly.

Also these may have been dealer installed... good point.

I still didn't like the propane drain arrangement. Casually tossing something into that locker could have dislodged the drain hose.