First of all, "inside-out objects" as a name doesn't suggest anything about being standard or not.

This is, unfortunately, a Damian-created issue, with a number of new modules released to CPAN with "::Std" as part of their names, coincident with the release of Perl Best Practices. "Class::Std" should not be read as "Class::Standard" as it's anything but. Pronouncing that suffix letter-by-letter gives a better sense of the caution and prophylaxis that should be considered before using it.