That being said, I can never apply to grad school anymore because I can no longer type in qwerty and won't be able to take the way portion of those electronic tests very well. (And that would affect my performance in other sections)
Recently the pain came back worse than ever, this time accompanied with quite serious thumb pains, I certainly do not blame the Kinesis as it is most surely a combination of many factors (poor habits, stress, workload, etc.), but the layout does increase the load on the thumbs so I think that contributed.
For now I have switched back to a cheap Microsoft dome keyboard as it is easier to type with using only my forefinger and middle finger (and easily allows me to avoid using thumbs and pinkies).
Of course this is all just my personal experience, for years the Kinesis was lovely and I may still go back to it, as always YMMV.
Before taking the test, they emailed me and asked me if I needed accommodations, to which I brought up the keyboard layout issue. They, however, wouldn't let me bring my own keyboard or change they keyboard layout. Typing in Dvorak does have it's disadvantages...