Tried it out some on my Macbook last night. Definitely pretty cool. I was using touchpad and still didn't do half bad haha.
Sniper rushing with a mouse/touchpad = awesome.
Did have to deal with the screen flipping bug on Port though. Every time I'd walk up/down/across an area of the map that caused me to change elevation ( ramps near the entrance to C etc ) the entire screen would flip upside down haha. MFG needs a QA department because I'm not sure how you couldn't see/notice this one