The main problem is Bluetooth is dog slow, so they use temporary Wifi networks which have to be manually confirmed twice (once in the app, once in the Android UI)... and the wifi obviously doesn't have internet, so after a short time Android nags you to disconnect because the wifi it's connected to doesn't have internet.
That's my experience, I'm sure it doesn't work well for everyone and it's still too cumbersome to do it all the time. I only use that feature when I really want to send to someone a photo I just took.
The UX for uploading to FTP isn't great but it's relatively more tolerable.
Seems like it works well (I don't have any gear new enough to test myself).
Supported cameras here: https://support.captureone.com/hc/en-us/articles/36000271811...
