Yes I have used this for accessory for some time, I find it incredibly useful when out and about with my camera. To be able to see photographs straight away saves loads of time when traveling between locations. Probably the best £25 I have spent.
I use my Ipad for Reading e-books, as a photograph viewer for my Nikon D700, emails, facebook on the move, and many more little things, and a portable games machine for my son.
Ipad
I use mine for e-books, email at work, anything on line at work, the Ipad is limited compared to my imac pro, but it's easier for the simple things.