I just ordered the new Apple Watch Series 6 with cellular and called up Sunrise to see if I can have a data only subscription (I already have a data only with Sunrise for the iPad). Apparently, they only do the add-on for the watch if you have a mobile subscription, so that is not an option.

Is there anyone on the forum that uses the Apple Watch's eSIM functionality in Switzerland?
I couldn't really find another provider that would give me the eSIM data only for the Apple Watch, and apparently just getting an eSIM doesn't work for the Apple Watch (something about different protocols?).