alt Hacker NewsFor OP: I think "Type specimen" should be the default sample text, just to get readers into the right spirit. :)
For anyone else reading this: make sure you click on the "controls & metrics" at the bottom to try out all the options (such as comparing with your browser's "text-wrap: pretty"); it's really cool!
It is the default if you open the demo on a narrow screen! It has a more striking difference between browser and justif layouts at narrow widths than the Alice sample. But maybe you’re right and it should be the default for everyone.