if you make a folder DCIM on your sd card or on you usb stick then you can copy pics and films over to your pad. i have not put a folder onto my harddrive to try as not had the need to try.
Whatever gets made or added to ipad or any other tech device people will expect more and more. Me im happy to have my camera seperate from the ipad. fits my pocket better. Smile at the Ipad and say cheese.