Mine love it! My panther kept crawling away until he figured out what was happening and then I had to cut him off after a while. It's especially appreciated by species that like high humidity and lots of water.
To do this you have to put a plant of some kind in the shower for you cham to sit on and let warm (not hot) water bounce off the wall near the plant so that just the spray hits the plants, not the direct stream of the shower.