Civicrm Webform Integration with Drupal - contact is always overwritten if email is same

I am looking forward to finally use Coleman Watts webform integration module, now that it is compatible with Drupal 7.23, to add contacts to CiviCRM as people send petitions via Drupal WebForm. Today I created pretty much everything, hooks, webforms, email destinations and all, just to find out that if the contact email is the same, the contact gets overwritten in CiviCRM. Ouch... In our petitions we have thousands of cases where: 1) friends or family members sign petition with let say grandkid email address, and 2) we have people that don't have email fill poster cards, but we use Drupal and CiviCRM to keep track of their home address, we enter them as noemail@howlingforwolves.org - and send email petition on their behalf.

As you immediately see, the CiviCRM create/merge setting where EMAIL + FIRST_NAME + LAST_NAME are all matched is the only way for us to go forward... Is it possible to add this option, or maybe there is there a roundabout way to do it?