Another option to consider would be the Homeseer master switch, and just not connect the load.
This switch has the ability to capture double tap, triple tap, and long hold at the switch itself and then sends a “central scene command” to the hub.
I mention this because it is quite popular for zone lighting, which has similar requirements to your fan set up. You could have a single tap turn on both the main fan lights and the decorative lights, a double tap turn on just the main lights, and a triple tap turn on just the decorative lights. And the same options are available for off.
It’s not as intuitive, because people have to remember what the different tap patterns are, but it does let you control multiple devices from a single gang switch.
At the present time it requires custom code from the community, but it’s a pretty popular switch because people do like the double tap option.
If you use the gocontrol switch I mentioned previously, you’re just going to have all lights on and all lights off from the wall switch. Which might be all you want, but I did want to mention the alternative.