No, you wont be able to show the replay to address as the from address to the recipient.
I think the best way around this would be to have a First name and last name form element, and use those as the From display name:
<?php echo((isset($_POST["UserFirstName"]))?$_POST["UserFirstName"]:"") ?> <?php echo((isset($_POST["UserLastName"]))?$_POST["UserLastName"]:"") ?>
this way the From display name instead of the address will be shown to the recipient