Yes, still works. That's not explicitly creating a lexical $_.
Here's an excerpt from Perl 5.18.0's "perlvar" (I'm not linking here because perldoc.perl.org hasn't loaded up v5.18 yet.):
$_ is by default a global variable. However, as of perl v5.10.0, you can use a lexical version of $_ by
declaring it in a file or in a block with "my". Moreover, declaring "our $_" restores the global $_ in the
current scope. Though this seemed like a good idea at the time it was introduced, lexical $_ actually causes
more problems than it solves. If you call a function that expects to be passed information via $_, it may or may
not work, depending on how the function is written, there not being any easy way to solve this. Just avoid
lexical $_, unless you are feeling particularly masochistic. For this reason lexical $_ is still experimental
and will produce a warning unless warnings have been disabled. As with other experimental features, the behavior
of lexical $_ is subject to change without notice, including change into a fatal error.