How good is the Magic Mouse for gaming?

So I just bought a MBA and I was thinking of using the apple store gift card I'm getting of a Magic Mouse. However one thing bothers me, I play a lot of gmod since I'm a server owner (matabot's house of terrorism) . I imagine that the Magic Mouse is pretty poor at gaming because of no dedicated right click button (since found you can enable it in settings) and I'm guessing scrolling to select weapons isn't good either. Does anyone have any insight about this? The only other mouse you can buy Fromm apple in the uk is a madcatz cyborg but I don't like that it's wired and the fact it's not made by razer