“This is the first 3D printing tech that really has the potential to break out of the prototyping realm that 3D printing has been relegated to until now” Nope. 3D printing has been there for quite a while already: it is being used quite massively in the aerospace industry, and not for prototyping...
examples / links?
Of course, those might be comparatively boring parts, like radio covers and plastic ducting. You won't be able to 3D print a working jet fighter in your garage for at least 5 years, maybe more :)