My biggest concern with perl6 used to be that without a default implementation you would be spending too much time making sure that your code would run on the different implementations, as I fully expect the underlying languages to cause differences in compiler behavior. Although it is my personal belief that Rakudo will become the de-facto implementation and solve that issue.

Projects like November helps sell perl6 more than anything. The more usable perl6 seems to be, the more it will get considered for use.