The hybrid of a keyboard and case is destined to become one of the most popular iPad accessories of 2010 and 2011 -- so clearly important that a half-dozen companies have apparently licensed the same products from overseas and made modest customizing tweaks for their own versions. Planned for an October release, Kensington's KeyFolio ($100) is amongst them, featuring a Bluetooth keyboard on one side and an iPad holder on the other, folding closed…
