Tested this with my wife. Used deep link (after signing up for beta but didn't install app on her phone). Worked perfectly all the way through install, screenshare, voice, and pointer dots. Freaking amazing! I'm using a n6p and she a n6 on latest N.
One thing was that from screenshare, I as the receiver, used the back button to go all the way out of the app. The last back seemed to cause a force close prompting me to share feedback. Just FYI. No biggie.