No reviews I know out of the top of my head, but I know a few other Tempers have it. See
this recent thread for example.
What I do know is that you
need a real parallel port connection for it, the USB connection is just for power. That'd be a problem for me, as I don't own a computer that has one for more then three years now.
AFAIK it usually does its job, any game that doesn't use a special chip is said to work.