In addition to its intended / primary function (importing photos from iPhones and cameras), the iPad Camera Connection Kit can also be used to work with USB headphones and USB keyboards.
I have had a chance to test out using the kit with USB headphones though. Had a very good test chat over Skype – and it worked just fine.
I’ve also tried out a couple of old USB / flash drives (just to see if the iPad would see any image files on them) – but both just got an error saying the attached USB device is not supported.
What sort of results have you all been getting with your iPad Camera Connection Kits?