Agreed - great camera (My wife has one, plus a G645w and my borther has a zi too), but manual focus is a non starter.
It requires some fiddly button pushing, and guessing the distance. There's NO way to tell whats in focus (it's not strictly a rangefinder in the tradititional sense), other than reading back the distance - fine for checking the auto is doing it's job, but not for setting focus. It's really not worth it.
Either accept the auto-focus or go with one of the older models which are real range finders.
Ian