I gave your snippet that makes no sense a shot. I was surprised to get an error considering the docs say that no validating is done. But here you are (and you know any DWIM behaviour out of this really wouldn't make sense right?):

#!c:/perl/bin/perl -w
$|++;

use strict;
use IO::All;

my $x = 'localhost:12345';
my $y = 'c:/servdata';

io($x) > io($y);

__END__
Undefined behavior for overloaded IO::All operation: 'socket > file' a
+t C:/Perl/site/lib/IO/All.pm line 840.
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