I tried perching a Smart Cat in the (rather abundant) space between the Kinesis keyboards key wells. I had to replace the rubber feet with thicker ones to raise it up a tad; this surface of the keyboard where it sits is slightly convex. But it was never as convenient to use as I’d hoped. I thought this was because, between the rubber feet and the thickness of the device, it just wound up being raised up too much.
I came across ErgonomicTouchpad.com a few months back. This site looks like it could have been adapted from a television infomercial; so someone capable of firing a synapse will naturally feel somewhat embarassed while looking at it. What they’re selling is simply a touchpad with the same characteristics as the Cirque GlidePoint (i.e., tap-click, secondary tap-click in the upper right corner, vertical scroll on the right) with no bezel or housing to speak of—just a velcro backing. Two sizes are available. The larger one fits comfortably in the same spot where I had the Smart Cat; and I figured it would resolve the height issue I had with the Smart Cat.
And I suppose it did. But rather than be easy to use, it just pointed out that the device height wasn’t really the problem. The problem was that I still had to pick my hand up off the keyboard to use it. And if I was going to do that, I might as well use the mouse.
So now I’ve got the little one positioned between the thumb keys on the keyboard. This works pretty well. I can just slight my right hand over a bit to work the scroll area; and if I pivot my hand, I can work the touchpad with my index finger.