I've been using it for 2 days now at a Dr. Who convention. It's worked flawlessly on my 7d. I've been shooting RAW plus JPEG and uploading the jpegs to the iPad mini. From there it's super easy to post to Facebook. The iPad mini is basically an iPad 2 so it should work with them. I've been using my friends laptop to save the images to my portable drive. It's a Dell so the screen is horrible. I'll PP the images when I get home. I'm surprised at how quickly I could get my pics online.
Canon 6D, Meike battery grip, Black Rapid Strap
Samyang 14mm f/2.8, Sigma 24 Art, EF 40mm f/2.8, EF 50mm f/1.4, EF 135mm f/2L USM, EF 200mm f/2.8L II USM, 430EX II Speedlite
HDR photos look best when I can't see them.