I got one, not to bad. Like I can see and reset codes with my phone. Helped trouble shoot my jeep srt
I got one, as well as a iPad mount for the truck (car now). They work ok, not all features work. It depends on the vehicle. Tried a few iPad/iPhone apps as well. There is a thread I posted up awhile ago somewhere.
Here is the thread with the mount. It is by RAM mounts. http://www.vtcoa.com/forums/f7/ipad-mount-48482/