At CES 2014, Lenovo unveiled the Miix 2 range of Windows 8.1 dockable tablets, which brings the 'rip and flip' design of Lenovo's Thinkpad Helix to its consumer lineup. Available in 10- and 11-inch form factors, can the Miix 2 achieve the same success as Lenovo's popular Yoga convertible Ultrabooks? We take a closer look.