It's great in theory, books, movies, and bad TV. Other than that, you lack enough water to keep both people warm. So, whoever is furthest away from the shower head is sprayed in the face or fighting so stay in a midly comfortable zone in the shower.
Second, yall better be flexible and with a reasonable height for eachother or things are not lined up right. I'm tall so half squatting the entire time makes for leg pains and cramps throughout the rest of my day.
Third, another guy mentioned it. Oral is almost non existent without a damn snorkel. Lol. Nobody needs to drown while giving a decent slip of the tongue.
All in all, let's do a good job of cleaning and mutual sexual teasing instead of proving to eachother that there should have been a $3000 shower overhaul to make it fun.