Not completely thrilled with the update.
The inverse scrolling is going to take some getting used to. The launchpad is pretty cool, and the ability to se all the windows that you have open with a quick four finger swipe is useful. I also like how you can go back or forward on safari based on the swiping.
However, my two month old MBP seems significantly slower. Before, with snow leopard, my applications would fly open, and I everything would load seamlessly.
Now, everything seems a few seconds slower. I tried to open a blank pages document, and I got the loading wheel....
I have never seen that wheel on this computer till that point. Hopefully, Apple can remedy this issue, and make things a bit more streamlined.