That would seem to depend on the definition of 'use'. The way I took it is that

use Foo;
my $foo = Foo->new();
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is ok since I'm just using the Foo object as is. Where something like

package Foo::Bar;
use base("Foo");

sub some_method_in_foo_that_i_override {
    my $self = shift;
    # stuff
}

1;
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would be caught by this clause. Foo::Bar is based upon the code in Foo...not just making use of the Foo object as it was distributed. See the subtle difference?

/\/\averick
perl -l -e "eval pack('h*','072796e6470272f2c5f2c5166756279636b672');"