As a Perl dev, I learned Ruby once, then was like, "why am I learning Ruby, I'll just use Perl."
Then I went back to Perl. Sorry. =D
I wish the problem with looking for Ruby jobs was that there was too many perl jobs.
Protip (if youre a smaller shop): Hire developers because they are good programmers. Programming languages are easier than you think to learn. If they already know Python, Ruby is not that different. Most C-like languages are easy to pick up if you already know one of them. Train them on Ruby once hired :)
I have tried Rust, unsuccessfully, to simply play around and to create some data generators. That extremely limited experience completely transformed the way I think about resource ownership and mutation. It made me a better programmer.
Yeah I tried that, but being a small shop, I just can't afford to match the salaries of the bigger companies, and after a year (of mostly training) they get poached by a company that can pay 20-30k more than my little bootstrapped startup can :(