From all indications Google Glass is being shifted towards being an enterprise product e.g. helping people pack shelves.
So in this case it doesn't really apply.
As an enterprise dev mgr who has been thinking about prototyping an app to do exactly this (well, actually the opposite -- to guide warehouse staff in the kitting process for manufacturing), I'm curious: where have you seen indications of Glass evolving toward the enterprise? I haven't seen it anywhere, but Google has tons of AR competition in the industrial space already, many of which are FAR more capable than Glass, which is 1) fragile, 2) feature-limited, 3) low res crappy display, 4) not at all intended to work autonomously.
You forgot Google Glass (control the eyes).