The interface looks good and is generally easy to use. The Windows 8 style of interface isn’t applied consistently just yet, and occasionally you’re left to explore some fairly complex dialogs, but for the most part it works very well.
Performance, however, did prove to be an issue for us. Scans took an age, and other programs were considerably slower once Panda Global Protection 2014 was installed. This is of course exactly the kind of thing you expect from a beta, though, so we wouldn’t draw any conclusions from it just yet.