It doesn't work very well in office environments unfortunately. I gave it a try with my work MBP and Mac Pro, and the amount of cursor judder / keyboard lag was wild. It'd also just plain not work at times. I think things are better when the environment is less busy and devices can talk to eachother over the same WiFi network (instead of WiFi direct), but it has proven to be unusable in the one scenario where I'd have liked to use it.
Thanks for sharing your experience. That's what I was afraid of when I saw this first advertised. It's a bummer, because it's a feature I could see being useful in a lot of different (ad hoc) scenarios.
