Hello Ian, Happy New Year to you..
I have and use a RAM Mount in conjunction with the Quadlock Vibration Mount on my M3W... I also have an apple iPhone and have heard reports about problems with the cameras being affected by vibration...
I can't say that I have suffered or experienced any problems, but I do use the vibration mount, so maybe the mount is doing what is meant to do...
I was hoping to add a couple of photos but I am not suceeding at the moment...