That's the dumbest thing I think I've seen in a long time. As soon as you swivel your chair around, or roll away from your desk, your mouse is going to fall off. So, 50 times a day you'll be bending over to pick it up. Unless you you remember each time to place you mouse on your desk before moving your chair. Also, you left arm is now stretched out to type because you cannot get your chair close enough to your desk because of how far that thing sticks out in front. And when you need to type with both hands, both arms will be stretched out.