@r.liechty_SDR
Sorry, I did not read your reply properly 
What triggers the on off? Some simple onchecked change function in customization.
Tap to enable, tap again to disable on = true, off = false.
This type of customization can be seen on stock Pixel Watch faces. Customization on Wear OS 4 looks similar to WFS 1.4.13 watch face so theoretically, it could be possible.
However, Iām not sure if new Watch Face format (building watch face only with xml) allows adding this type of customization.
Right now, timeline can actually disable elements so maybe it could be possible for this switch to work in similar way?
Maybe @Dorothy or @sinjae can shed more light on this?
