Wow talk about drinking the kool aid. Apple did not invent the wireless mouse, that honor belongs to Logitech[1].
[1]:http://www.macworld.com/article/1137400/input-devices/mouse4...
Once every few months you'll run into someone who uses a Magic Mouse, but it's practically a novelty item.
As far as I remember, every Mac user outside of schools was already on the Logitech mouse train back then, thanks to Apple's stubborn insistence that 1-button was the platonic ideal of computer input devices.
Personally, I had the Logitech S530 Cordless Desktop for Mac, which was a keyboard/mouse set that came out around the same time as the wireless Mighty Mouse did. The 8 buttons were great for Exposé shortcuts.