Samsung released the Galaxy Tab 10.1 in Italy a few days ago and TouchWiz UX was already installed on the tablets. The US release is due out any day now. I for one and checking for System Updates daily.
Below is a video walkthrough of an Italian Galaxy Tab 10.1 with TouchWiz UX. It looks just as snappy as sock Honeycomb (some things look even faster!).
What do you think of TouchWiz UX? Let us know in the comments or on the forums.