I think most of the concepts will carry across, though some of the syntax will be a little different. For example, memoization is done in Perl 6 with "is cached", but the concept is the same. Tail recursion will hopefully be better supported in Perl 6, but that should be entirely transparent. It's a little easier to write closures in Perl 6, but they work very much like Perl 5's closures. It'll be a little easier to write arrays that extend themselves via generators, but they work on the same principle. And so on...

In short, I don't think it would be a waste of your money.