I've used it personally, and it works as advertised. It sits independent of google analytics, if I remember correctly, so it doesn't matter what analytics tool

I've used it personally, and it works as advertised. It sits independent of google analytics, if I remember correctly, so it doesn't matter what analytics tools you're using. As long as you're only running a few tests at a time, you're willing to embed javascript on the pages you're testing and let the serving of the tested sections be handled by google (which adds a bit of latency I'd guess, though not much), it's a great way to get into testing. Hands down better than not testing.