While I have used it extensively here's what I've found so far

Like
Portrait mode, no more having to edit for vertical video
Pretty simply to use with overlays

What could be tweaked
Powerpoint didn't upload for me
I usually canva to design my slides and can't upload this, also couldn't upload a basic 1 page powerpoint either so I like this feature working as I always share slides in my presentation

I would also like to share the slide in the layout mode .ie A| B frame A being my camera and B being slide
Would be super hand if I could also use 2 cameras on me, not sure if this can be done as in the video presentation of how to use. But I couldn't make this work without interference.