The iPad is neither a cheap device nor does it even run a full-featured operating system. Its non-existent input devices - read: keyboard, mouse, trackpad - make it an awful choice for a "computer replacement". Now they add keyboards and trackpads which basically turn the iPad into a... NOTEBOOK. But still with a crippled operating system.
May I ask WHY anyone would want to use this device as a notebook replacement, when you can get a real notebook with full featured software for even less money?
In all honesty: I don't get why anybody would want to use such a machine with all these add-ons instead of the real thing.