I've read a couple books on Perl, but I must fess that I don't really get what ties it all together. Every new trick that I'd see look like it was coming from the blue, without being related to any other tricks that I stumbled across. Not really a knock on Perl - lots of people performing lots of useful things in the language, but I just never got my head around it.
However, I'm hoping your latter interviewee lands gainful employment. When it comes to Perl, my interview would go much more like the first candidate.