I've owned this camera for over a year.
Despite the consumer-y industrial design it is very well built and confoundingly heavy for it's size due to magnesium alloy construction. Holding it and my X-Pro1 at once causes a cognitive dissonance as they are of approximate weight.
The 22mm lens combination is quite pocketable in comfortable jeans and even more easily in typical cargo shorts. It's a tight fit in unpleated slacks and hipsters wearing girl-cut pants are probably out of luck.
The convenient size forces a compromise in tactile controls, as in there are none. Aperture, shutter speed and ISO can only be controlled through customizable alternate button functions or the touch screen. Said screen is well designed and responsive but overcrowded from the many functions relegated to its limited real estate, making for a finicky experience. Don't expect to be able to change settings within the critical time window during composition of an impermanent shot. What's more the touch screen cannot be turned off, only the shutter release via touch, causing occasional surprises when taken out of a pants pocket. AF points and other settings may go awry as the screen hugs your leg. So much for pocketable.
Canon claims this is a PDAF/CDAF hybrid but it behaves like a contrast detection only camera with the attendant caveats. If you expect spot on AF on the move you will be disappointed. The EF-M lenses have focus rings but it is by wire.
The 22mm lens itself is optically impressive and features one aspherical element. Distortion and aberration are minimal.
In practical use it's greatest assets are size and innocent looks. The camera averts the user being perceived as "a photographer". Unfortunately, it doesn't transcend that provenance and is not a photographer's camera. Since I obtained an X-Pro1 it's been virtually unused. It's an excellent vacation or "social" camera and wonky for anything else. It compares well to Micro 4/3 due to the availability of legacy lens adapters on a small body with a less extreme crop factor, but the lack of professional controls remains an issue.