I just commissioned a 40 device caseta system with 3 of these. Found that if there was nothing paused then hitting play didnt do anything. I also couldnt get it to reliably pull a favorite playlist. Volume worked fine. I went ahead and programmed the center button to tell control4 to select the pre-programmed favorite.

Its nice to have a hard point of control for sonos but im not sure its really worth it to have.