I can agree once you figure out your tank capacities and your needs you learn when you will need the tote. I have learned how to equalize my tanks and let the black tank fill with some grey water.
This back filling technique ultimately gives me more grey tank capacity and allows me to leave the tote at home.
I don't use my tote as much as I used to simply because I have learned more about my needs and my tank capacity.
However if I'm at a non sewer site for more than 6 days, I will bring the tote.
I generally never take quick showers or attempt to curtail my water use.