Why are you worrying?
- There is no pressure to use OO in Perl 5. There will be no pressure to use OO in Perl 6.
- Perl 6 is not getting a makeover in the OO area alone. More, and more powerful, functional constructs will be possible in Perl 6 as well.
- Perl 5 is not going away.
Makeshifts last the longest.