It all comes down to who you trust to provide you with this type of service.
UK PCAdvisor did a review
and seemed to like it. A similar review
(which seems to be a condensed version of what was posted on PCAdvisor) was posted on PC World.
I probably wouldn't want to try it out on my main (or on a mission critical) PC at this point since the reviews indicate there are still some rough edges to it.
But it looks like something that might be be worth watching and possibly experimenting with on a VM.