When I’m outdoors, with a view to take photos, I use my iPhone and my Lumix TZ30, and occasionally I’ll have a small courier bag with me to carry my binoculars and an emergency waterproof, in which case I’ll stick the pad in there as well, along with the camera kit. Not having to worry about the phone photos, because of Photostream, I’ll copy the camera photos onto the pad, then I can edit them and bin the crap ones, and they’re all on Photostream together. Works beautifully, and the pad’s screen is perfect for looking back over older photos.
I’ve got about 3000+ on mine…
As I said earlier, an iPad, with a good camera app, mounted on a tripod, would be like using a plate camera, but it’s horribly impractical for general usage.
A Mini would be a good compromise, though…