CORRECTION TO MY PREVIOUS POST:
Went to the store today after reading some of the post here. It seemed to me if the X200 worked then the X100 should work. I went in and asked if I could try my cable on the X100. The gentleman who helped me told me they had no X100 open, but just the X001's.
Ends up this weekend I was trying the X001, which did not charge the 3G. I went ahead and swapped the X200 I purchased for the X100. They took about 30 minutes to swap out and it works like a champ. The 3G charges, controls the itunes library and still allows me to use the phone functions such as Pandora. Also the cover art appears on the screen. THe XM interface is also very nicely done as well. Going in Thursday to have them hook up a RCA mini 3.5 jack so I can watch the 3G videos and hear through the stereo.