Install an Independent Watch App from an Ad Hoc build

For iOS it's typical to make ad hoc builds and then install the IPA via Apple Configurator 2, Xcode, a custom OTA website, etc. It's possible right now to export an independent watch app with an ad hoc provisioning profile, receiving an IPA with an app containing a "watchkitapp" bundle identifier. When trying to install the app to a phone, I get errors like "devices does not support this app" instead of proxying it to the watch like it does with a companion app.

Is there any flow for installing an ad hoc independent/standalone watch app?

Did anybody figure out how to do this? I'm hoping to distribute a standalone watch app "ad hoc" to my watch also, but can't figure it out.

Install an Independent Watch App from an Ad Hoc build
 
 
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