[KomoD]

I really like the idea, just takes some getting used to.

These are not a big deal, since you can "unfocus" pretty easily but:

If I'm focused on a text field I can't use gesture navigation to go back.

I also cannot press "X" to clear text field if I'm focused (example: Google Play Store's search field has it, happens with the "back" button too), also cannot press any of the "recent search results" in the settings app

Both open/enable the keyboard instead, not sure if that's something that can be solved.

[morphles]

There is more detailed usage video in intro video description (if you open it on youtube), in short you can minimize keyboard, by double tapping on left side and choosing thick down arrow. I think that should be sufficient, it is quite similar to androids close keyboard thing, but without loosing focus of field.