Not a fan. I have one but had to do modifications to it. Specifically the front most mounts are slotted in the wrong direction. They're slotted left to right rather than front to back. Every other one is slotted front to back.
Edit: I see that they have changed their design. The one I have is a one piece design. The new one has the slots correctly. However, I would go with a Savvy if I did it all over again.