Got my new mag loader in today. Works for .40 or 9mm. I only loaded a couple of mags with it but it seems like its going to be super fast once you get the hang of it. Seems to load 40 easier than 9 but that could be the difference in mags.
http://www.americanspeedloaders.com/glock-speed-loader
http://www.americanspeedloaders.com/glock-speed-loader