As I've said before you really have to get a dock and case designed to work together (e.g. Seidio) unless you're willing to try out several universal docks/mounts (car or desktop -- doesn't matter which you're asking about) to see what works with your case.
There's no such thing as a standard for dimensions and shapes for all cases that accessory manufacturers adhere to. Your best bet if you're not willing to change the case that you already have is to find a universal mount that has adjustable arms AFAIK.
i got the bracketron 200 BL mount for the air vent and im positive the body glove can fit in it since i can fit my garmin .. it has a very tight fit on the phone and it wont slip out even on those hard bumps.. im gona make a review video on it soon