Looks pretty good, seems fast and responsive (not bad considering I'm in the USA). The PDF idea is very good, I'd make the 'download catalog' a bit more prominent for customers.

Dashboard tools and floating menus worked great. One thing I couldn't easily see how to do was change the skin of the page, ie the colors and fonts etc. The catalog edit looked good but the graphics widget didn't seem to do very much.

Still, these felt like things that haven't been fully implemented yet, but if they're done to the same standard as everything else I'd say you'll find success with it. I found it extremely fast, intuitive and responsive, which is more than I can say for the site I manage at my job!