I like this as a compact alternative for controlling lights (via bluetooth). I only use it to turn them on and off.
The other controls are less intuitive for me e.g. if you change your mind after pressing to turn lights on, you have to wait for a few seconds before pressing again; otherwise it will change scene instead of just turning the lights off. It would also have been cool if twisting the button acted as a dimming control, rather than press/hold.