I've had the MacPadd for a week now. Frankly, I think I like it. At first I was a bit put off by the sound of the magic mouse moving on the pad, it's certainly "noisier", but now that I've had a chance to get used to it I find I don't notice it as much; I even find it somewhat pleasant now, somehow. I've used the mouse on the desk surface and that's only slightly less noisy. It does slide along the pad more than, say, a felt-type pad but it's not really distracting to me. Additionally, it does compliment the look of the iMac and keyboard nicely. Maybe the only thing I'd change is to have the larger 9"x9" size pad, vs the 6"x9" I got, but it's not a deal breaker. The pad is very stable on the desk due to the non-stick surface on the bottom, it doesn't budge at all.
Clearly this is subject to personal preference, but I'd recommend it if you want something a bit unique and don't mind paying a bit more than usual for your average mousepad from Fry's or Best Buy.