The mounting of the protective glass is even easier than that of the foil because it gets no wrinkles into it. In addition to the supplied cleaning materials I have taken my little Blasebalk I use for cleaning lens of my camera to even the smallest dust particles blow away. The glass has then perfect fit on the first try on the iPhone and there were no inclusions under the glass (at least I have not noticed)
I hope this protective glass now holds more than the films.