Side Effect of loading it twice?

[eluser]PhilTem[/eluser]
You're effectively not loading it twice. You are in fact calling the load->library-method but that does not mean it gets loaded twice (if it was loaded twice it'd overwrite itself).
CI's business logic for loading files is: If you already loaded it we don't load it again:

Code:

if ($library === '' OR isset($this->_base_classes[$library]))
{
    return FALSE;
}

$this->_base_classes stores the name of every library loaded.