It worked for me!
I was skeptical, but I gave it a try.  The product is well designed, instructions are clear and don't require a lot of detailed reading.  Worked the first night I used it.  It isn't as comfortable as sleeping on a pillow without an insert, but even as a stomach and side sleeper, I was able to wake up feeling I got a good night of sleep.  They tell you to give you a week to adjust; took me three nights.  Just to stay accustomed to the experience, I don't even turn it off when I'm in bed alone.  Take the advice to use a medium pillow.  The first pillow I used was too soft to make the experience comfortable.  The one I'm using is bamboo and it's perfect.
Rating: 5 stars