Hmmm.. I actually have both types of products. The Kinesis keyboard with backspace, ctrl, alt, enter, home etc using my thumb AND the iGesture pad from Fingerw

Hmmm.. I actually have both types of products. The Kinesis keyboard with backspace, ctrl, alt, enter, home etc using my thumb AND the iGesture pad from Fingerworks ( http://www.fingerworks.com/ http://www.fingerworks.com/ ) which is a large "mouse pad" where you can use gestures with 5 fingers (and it works for all applications). The brilliant part is that the iGesture pad fits perfectly on the top of the Kinesis keyboard (the left and right part of the keyboard is separated for ergonomic reasons). I've had the iGesture for a couple of years now - it will be a sad day when it dies as there are no replacements that I know of....maybe Apple will release a similar "mousepad" in the future ?