Is this you?

http://www.keyboardmods.com/2010/04/wireless-split-kinesis-c...

If not, since you take the arms of your office chairs, I'm going to hazard a guess that you have wider shoulders than most keyboards are designed for. If that's the case, you might wish your Contour had either a bigger split or an adjustable split. I would be more interested in getting a Contour if I could have a bigger gap between the left and right sides.