This is indeed an extreme solution, but I like the fact it works just like a normal browser once installed. Reverting to default notwithstanding, that's still more convenient than having to boot up a live cd or run a second OS (I realize that's what's happening in the background, but my understanding from the article leads me to believe that aspect is hidden once the program is installed).
It's certainly way overkill for a standard browser and there are other issues like masking your IP address if you're trying to be completely anonymous while on the internet, but I can see where government agencies who need to visit the "dark corners of the internet" would like a system like this. It makes a lot of sense.
I'll probably never use it but it's interesting to know about. Thanks Wolfgang!