We have a brand new x20e (2015 model). The shower knobs are mounted on the back wall of the shower surround . . . and, yes, there IS a real shower surround on the new model. As I recall, the 2014 that was on the lot did not have the surround, so we were pleasantly surprised to see it on the 2015 when it was finally shipped.
Kathleen and the "Big Guy" (BG)
Homer the Beagle
2016 Acura MDX - 2015 X20E
10K Equalizer; Teshonka P3
Dual 6V Deep Cycle Interstate Batteries