Windows 8 might be a gamechanger for tablets, but it's designed for desktops too. How does it fare with a keyboard and mouse?

Since Windows 7, Microsoft's been busily honing the interface for Windows tablets, which uses a bold bunch of squares and rectangles in flat neon colors and has been christened "Metro." Windows 8--undoubtedly the biggest change to the operating system in a few generations--finally brings Metro to the desktop. So how does it work with a keyboard and mouse? Oh yeah windows 8 was made by microsoft but designed on a mac. See pic below of designer. 
http://www.popsci.com/gadgets/article/2012-03/windows-8-preview-desktop-hands-how-most-people-will-actually-use?cmpid=tw