I have been using the Rokform universal mount on the back of my Lumia 1520 for the past year and absolutely loved it. Locks into my car during my commute, works on my bike mount and the added magnetic mount is used in my wife's car as well as anywhere I am at in th garage. I was even able to place the phone under my Jeep while I was working on it to listen to music as well as watch YouTube videos showing me how to actulally fix what I was trying to fix.
I simply placed their mount directly to the ProClip USA mount I already had for my vehicles (have been using one for 10 years!!). Simply removed their dedicated phone mount and stuck the Rokform RMS to the face of the ProClip USA car mount.
Here it is in my car...no iPhone 6+ yet, but the case for that showed up yesterday.
Side view
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front view of Rokform mount attached to the ProClip USA car mount.
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View of Rokform case on mount (sans iPhone 6+

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