I was just about to follow up with that pairwise option. Glad I saw your update before I did. But I still wanted to mention that I find it necessary to write it something like this:

print pairwise{ no warnings 'once'; "$a $b\n" } @nums, @dat;
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...lest I get a pair of warnings that $a and $b are used only once.

List::MoreUtils provides several ways to do it. This isn't quite as elegant, but still seemed neat to me.

my $ea = each_array( @nums, @dat );
while( my( $n, $d ) = $ea->() ) {
    print "$n $d\n";
}
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Update: I've submitted a patch and a corresponding test targeting the 'used only once' warnings.