i have used it, i had to use it as standalone though, it never worked for me through photoshop. I really wish i had never updated from 9.5 to 10 because they stripped a lot of the filters out and you presumably have to buy them in packages now, and i cant seem to find the 9.5 version anywhere. but its fun to use and it is free to try, they have always given the older version away when they bring out a new one.
Thanks for any comments