I got the "pro" version and have successfully been using it with my laptop. J-pegs load quite quickly. RAW files take 15 to 20 seconds each. Sure makes it nice when working in studio, to see a large version so quickly, without the need to "sneaker" net, or bother with a cable.
People are astonished how the images come up on the laptop, without a wire connection.
Definitely a good tool to have! Regarding using it with a iPad, I see that usefull, but you can buy a windows laptop for $300 that allows you to do so much more than a $500 iPad. Yep, the iPad is chick, and lighter, and slightly smaller, and batteries last longer, and the display is really nice, but . . .