Have we met before?
Yes, the Logitech Wingman Mouse is actually the same mouse that Logitech used to sell four years ago as the "Mouseman 96" Note the picture below and you can see that they're exactly the same shape. Opening the mouseball receptacle reveals that the rollers are in exactly the same places as well. So in essence, it's the same mouse, but just packaged under a different name and in a different color casing. Some people might say that doing something like this is fraudulent or even worse.
Separated at Birth? The Mouseman95 and the Wingman
However, if you look at the mouse and all the circumstances objectively, it would be wrong to criticize Logitech just on that basis. The old Mouseman 96 shape was a popular design, and many had clamored for its return after they were discontinued. They're also very durable. Mine is more than 3 years old and is still going strong. The contoured buttons feel good to rest your fingers on, while the large triangular shape is great for people with big hands like myself. Other mice tend to feel small and flimsy if you have large hands but the Wingman Gaming mouse (AKA Mouseman 96) has a good solid feel. The thumb indentation works well for a more secure grip but it's not as revolutionary as it's made out to be. At the time the Mouseman 96 was released it wasn't too common a design feature but today many mice include a good place to rest your thumb.