Definitely, a macerator would be the ideal way to deal with hauling black water in a tote...that's the ONLY way I'd care to do it.
By the way, pumping-to-a-tank-in-the-tow-vehicle for waste water and pumping-from-a-fresh-water-tank-in-the-TV-to-the-trailer is a great set up... If anyone wants details about a very cool set up, contact "jimmini" here on the Forums...he does a lot of boon docking and has it all
figured out. He can go for what seems like forever without issue.
Also friends of our use a 35gal bladder for fresh water and use a 12v
pump to fill their trailer tank when they are where there is no water supply..works great. (We try to park next to them whenever possible! They share.