One surprise was that TP seems to float on the surface of the COIR/peat, rather than being drawn down into the mixture. We deal with that by letting it dry and from time to time, plucking it out, putting it into a plastic bag, and chucking it with the rest of the garbage. It hasn't been a problem the way a sewage-soaked plastic hose would be to me, or repairing a jammed mascerator would be.
The other thing that takes some getting used to, at least for male mariners, is that EVERYBODY sits to use this thing. If they don't, ain't NObody gonna be happy with the soggy results. So, deal with it, friend. Cooperate or head for the lee rail.
Sitting is sort of essential on my boat regardless.....but I use a DELO oil jug for that anyway.