From the FAQ on their top level page:

OK, I Want to Try Exherbo

No you don't.

Yes I Do

OK, maybe you do, but we don't particularly want you to try it because we don't want to deal with you whining when you find that absolutely nothing works. Exherbo isn't in a fit state for users. We might get there one day, but it's not a priority. Right now, all we care about is getting it into a fit state for a small number of developers.

I love it.