I used a Magic Mouse for a year and can't see anyone seriously using that mouse for hours on end unless they really hate their hand. The ergonomics of that thing make it extremely uncomfortable, especially if you want to use the multi-touch gestures. Especially when you have a mouse like the
Logitech Performance MX which is sculpted to the natural resting position of your hand, I think you do yourself a disservice using a Magic Mouse.
If you really want gestures, get a normal mouse and a trackpad. Use a normal mouse with your right hand and the trackpad in the right with a keyboard in the middle. Pricey for sure, but it's better than the pain caused from bad ergonomics.