I'm so tempted to get this as a second camera for my face when I'm vlogging. It looks perfect for what I need. I can do some exciting things with it like a split screen with half of the video showing the GoPro on my head strap and the other half of the video showing my face using the Osmo Pocket.
I did consider using my mobile phone and a gimbal for it, but I think the Osmo Pocket would be a better solution in the long run and I won't have to fill up my phone's storage with video.
Edit: Did anyone buy the 3.5mm adaptor to plug in an external microphone? How does it work in practice, and which microphone did you get?