Sorry Schiminiello, didn't work on the Macbook Pro. My laptop is a Dell XPS 17, and like the Macbook Pro it's an IPS screen - and yes, it worked great. Once again, in my eyes, better than previous devices.
Some of the Mac guys on here aren't too high on the i1Pro, so maybe there is a problem with the Mac side of the software. On the Windows 7 side, all is very good so far. 2 days isn't long enough to know yet.
The prior posts on this device and software had me wondering too. My experience surprised me, based on their reviews.
It should work on a Macbook Pro, nothing lost by trying. On the other hand, I personally don't do much post processing on a laptop anyway. Both of my desktop monitors are where the real work is done and the new Xrite product was a big upgrade. Good luck.