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Gaming mice always feature many buttons, but I hate the (zero delay) cord. THEN uuuugh their design often ranges from ugly to grotesque...
I also very disliked Logitech's MicroGear scroll wheel [pdf] when it was introduced two years ago: middle mouse button used a lot of force, tilting the wheel left and right was a pain. Now things seem to look better, tried the recent mice which come with a plastic wheel instead of one made of metal and the usability was quite ok.
Now I hope that the mouse won't weigh to much. At least it's design is very appealing, don't you think so too?
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Now who the heck needs such a feature? I already keep hoping that we all can modify the driver's xml so everyone can assign whatever function to side scroll
update2: in this 9min review, a guy compares the mouse to his previous MX Revolution
track price in Switzerland [digitec]