You mean, for those rare occasions when Google Glass just doesn't cut it to make you the nerdiest guy in the room, you can now get an extra-boost? Well, sign me up!

Nah, that's too blatant. Have your shirt recognise small movements of your upper and lower arms and shoulders. With practice you should be able to enter reasonable-bandwidth data similar to on a cell phone keyboard without anyone noticing (and without having to use your hands).

...we'll call it 'learning to wear'.

I can't help but imagine how awkward that would be. If tilting your head repeatedly and talking to yourself was not enough, touching yourself all over the body will definitely make you look awkward!