A bit confusing at first, but then you get hooked
This mouse is flatter than many others and the grip is a bit confusing at first.
It's a good idea to get a good grip on the mouse, but you get used to it quite quickly and then you appreciate the precision of the scroll wheel and the grips on the side of the mouse. I bought 2 of them (one for the office and one for the house), I use them daily and they don't show any signs of fatigue.