Not that my opinion means much anymore since the accuweather fiasco. But I almost bought this mount. But after seeing the video I noticed you cannot charge the phone in the mount. So you would have to run on battery power. And with the way gps apps draw on the battery, it would be useless.
So I went with the old standard. I bought a ram mount. But I bought 2 mounts. The standard iPhone mount and their water proof box. It's called the Aqua Box. It's not the greatest, but it keeps the phone dry. And you can operate it in the case.
I use the standard mount 80% of the time. The aqua I use in rain or Offroad. And in the extreme cold. But when the clear rubber gets too cold it's hard to control the phone.