I have Nikon Camera Control Pro for tethered shooting with my notebook but now I want to take advantage of my Ipad (and justify the cost some more

Basilcaly anyone had any luck tethering their camera to their ipad/iphone having got an ipad it would be perfect for quick viewing on a decent screen. I've had a look at the two options Eye-fi and the Macdock--->usb adapter although the later doesnt seem to have any apps yet that support tethering but does allow for instant download so for a duct tape solution it might work.
Any ideas or experience with the eye-fi cards out there? (also would need to use the CF/SD adapter for it so noidea if that will fuck it up as well as my nikon is CF not SD)