Aqua View Showermiser

Yeah I know it sounds like an advertisement but it isn't. I've been browsing for a smaller RV and came across this feature offered in a Forest River Epro trailer. It's a water return for the shower until it gets hot. Great for boondocking but I wondered if any new camper owners have used one. My current Jayco has the shower close enough that I fill my filter pitcher while waiting on hot water. Not much water wasted that way.