Just think of all the RSI problems this thing is gonna cause. Looks cool, but I don't think think it'll be practical in the long run.
No such thing as RSI when using the MYO. I've been around deaf people who sign all day and not get tired much from it, so I'm very familiar with this culture.
Also, as a fencer, I don't get RSI when using my weapon against another opponent. My hand and arm gets stronger over time when practicing in class and in tournaments. In other words, fencers put their blades high up, pointed at the opponents' neck without dropping down that much.
And those weapons are not even heavy at all.
But you can get RSI when typing all day or using the standard mouse if used incorrectly. RSI affects those who work long hours in a certain pose or stance without taking a break or using incorrect form.
It's one reason why I NEVER, EVER use Apple's bluetooth keyboard for my desktop and rely on Microsoft Natural Ergonomic keyboard which is very helpful for touch-typing and comfortable to use. Sure, it's big but it bother me not. So if you're going to be typing or coding for hours, go with an ergonomic keyboard. Don't for 'purty' looks. Go with what functions well.
And as a graphic designer/artist, I use the Wacom with the stylus which makes it easier for me to manipulate images or digitally paint, using the short keys (I'm referring to the Intuos 4 model which is excellent). The Cintiq, on the other hand, is on the luxurious and expensive side and is one of the most coveted and sought after device by creative professionals/agencies.
But I'm sure it won't surprise me if Wacom introduces a tablet using their own brand with a touch-screen on a cheaper scale while retaining their trademark pressure sensitivity and stylus. The reason I say this is because they had a survey over a year ago questioning Wacom users about exploring possibilities into that realm.
I'm aware they have licensed Microsoft using their tech for stylus and pressure sensitivity uses (I think Surface Pro and Samsung are the only ones so far with this tech).
Anyway, point is that the MYO is a great concept along with Leap Motion that they are the next frontier of motion computing. RSI should'nt be a problem because it's not designed to be used all day.
Minority Report is already here and the production folks of that film KNEW about this coming around the corner years ago.