The unit is moderately compact at 11.3 by 11.5 by 2.6 inches and 4 pounds, and the touch-sensitive cueing interface looks like it will give you precise control over the iPod--however, there is no pitch control, an omission that will likely create some massive train wrecks.
DJs who happen to have any dock-connector iPod (or two) have been waiting for a mixer like this for years, though we think Final Scratch is still the sweetest way to mix MP3s.