On my Echo Show devices (I use the Show 8 and Show 5 models) the EZVIZ skill works fine both for video and audio. Monocle worked only on Echo Show 5, on the 8 just the audio. So I deactivated it for now. Will stick to ezviz firmware on the doorbell and ezviz skill on alexa.
I don't have a traditional chime, so I just wished to have the skill use Echo devices spread around the house as chimes when someone rings the bell, like it happens with Ring and Nest. But it doesn't. I filed a support request to ezviz asking if it's in their roadmap.
One other thing I'm trying now is IFTTT: it has ezviz support for trigger. PIR events are catched, so when motion detection activates, I can set an action. Now I ordered a z-wave siren (
Z-Wave siren for indoors • Aeotec) and will try to integrate that via IFTTT.
Unfortunately Hubitat doesn't support ezviz cams yet, otherwise integration would be much easier. Hope I find an alternative solution.