the issue with doing that is that it isn't a light - i'm guessing it doesn't behave like one in Domoticz (not really), i.e you can't set brightness, you can't change colour.
In terms of interacting with it in Google, you can still put them both into the same Room, and say "turn everything off in <room>" - if you start using the Home app, or a smart display, it won't return info, as it will be trying to return data the switch doesn't have.
Saying that, ping me your Controlicz ID, and i'll take a look
