The quick way to switch your actual keyboard is to use setxkbmap, or loadkeys, but if then you'd need to type in all the comments here to have them translate. This script would work as a filter, which is more convienient.
Also, if you want to switch back and forth, or are on an old system that doesn't have alternate keyboards available in X11, I use tod/toq, from the Tools section of Hacking Linux Exposed website.
If you're wondering why there aren't many posts by the other authors, that's because they're all in or recovering from Las Vegas....
"The fundamental principle of science, the definition almost, is this: the sole test of the validity of any idea is experiment." -- Richard P. Feynman