If it were production-ready, some team would adopt it for production work. If you consider "there are no groups or organizations that have adopted "Perl6" other than hobbyist clubs" probably correct then you'd probably agree it's not seen as production-ready. Or even close enough to production-ready to start a longer project in hope it's going to get production-ready in time for the project to go to production.
I've seen several "all behold, I've made Perl 6 quicker" posts here on Perlmonks and while the message to stand in awe of claimed to have made Perl6 several times quicker, it was still at least two magnitudes slower than a matching Perl 5 solution.
Those two languages are different programming languages, but I would not consider them just siblings. They are more like a person and his atomic-waste-mutated brother with several extra limbs at weird places, odd number of eyes and many extra organs that nobody knows the purpose of.
Enoch was right!
Enjoy the last years of Rome.