I downloaded it yesterday (via same source as you), and
so far it seems to work pretty well. There are some
windows which do not seem to display a preview properly,
but the windows I was most interested in, especially the
Internet Explorer ones, work like a champ.
I tried it out a while ago and found it a bit of a pain
with VS. It would display 2 tasks for VS, while the
regular task switcher would only show 1 (as it should).
Perhaps it has been fixed, but it was getting annoying
to have to remember to hit tab twice whenever switching
from VS to something else.