No,<p>It's worst standing but I believe a Gorilla arm "effect" results from any devices which forces the user to do extended input without physical support for his/her arms.<p>Just see how long you can sit at a chair with your hands in the standard keyboarding position but without the keyboard.<p>The iPad looks just big enough that any serious input going to require repeated arm-raising whereas the iphone/ipod-touch is small enough you can use it with your hands always resting on a table.