So what happens when you take the click out of the interface.  Go over here and try it out.  Fascinating experience.

It raises some thoughts for me.

1. Why remove the click in the first place.  I mean it's a ubiquitous, trivial user interface that works. 
2. Removing the click removes the use of our fingers from the device.  You now are limited to your hand and arm...isn't that a downgrade?
3. A lot of the questions and work that went into this site seems devoted to making the non-click interface as easy to use as the click...uh...just keep the click.
4. My subconcious wanted to click SOOOOOOO bad during portions of the experiment it was kinda weird.

Go check it out it's pretty interestingg.