Ive used it for a little bit. Im sort of evaluating it a bit Its a pretty nice looking shell and has some cool themes. Kinda reminds me of a linux desktop enviorment like icevm or gnome. If anyone esle has tried it let me know what you think. For those who want to try it out heres the link. You can also get the themes from http://www.wincustomize.com/ in the litestep section.
Btw, this is not a themer for windows, if your looking for that then get stylexp or window blinds. This is a whole different windows shell as opposed to explorer.exe.