I like Ruby a lot, IMHO it's syntactically cleaned perl dialect with some python specific features.

And it's really amusing how the ruby hype sucks the snake community ¹ ! 8 )

But

• no CPAN like perl
• much slower than perl ²
• by far not as widespread as perl

maybe in some years Ruby might be mature enough, but hopefully at that time perl 6 is available.

IMHO who masters perl has no problem dealing with ruby, but not vice versa.

so the strategic decision is up to you!

UPDATES:
(¹) changed to more diplomatic metaphor ; )
(²) maybe not? -> 726161