Re: Serious question ...
resolution will be an issue, from what I have heard it's impossible to read standard in game text in the devkit, so i would imagine the kind of crisp display cadders are used to will be out of the question for a few iterations. also there's motion sickness to consider, it's improving all the time, but still nowhere near the sort of thing you would want to (or most people would be able to) wear for 5 or 6 hours a day.
I think HoloLens is more likely to achieve traction in design applications, at least to start with.