Being a photographer I'll say what I like about the camera connector kit, having had it since last June, is the immediacy. I have a Tenba case that holds the Ipad, 1 or 2 camera bodies, lenses etc. I often load everything in the field and check things out before leaving. Also nice to share both on more casual trips with friends passing it around, travel when I can share shots with friends at home. Definitely worth the $30 for me. I have 2 systems, one using SD cards and one using CF cards which I load using the mini USB from camera to connector to Ipad.
I'm a Dropbox lover. I transfer processed photos (among many other things) from main computer or laptop back to my Ipad for portfolio. Good uses for both.
Diane