I finally got to see one today in person at Best Buy.

I would NEVER buy one. _never_ Its fucking tiny. Like 10-year-old kid tiny. Its about the size of a laptop/netbook portable mouse with 17 buttons on it. What a stupid design.

If you're considering buying one of these things, go find one first and put your hand on it. The last row of the "number pad" - I had to basically take my hand off the mouse to use it.