Jofm5:
2. If someone compares your biometrics with those on the card then that can be forged - my picture and biometrics with your printed details.
No, The details on the RFID would differ from printed details and should be picked up. You cant change the details on the RFID without corrupting the checksum.
The point is that you'd have a completely self-consistent card for the person carrying it, but with a different name. If you think that the encryption/checksum can't be broken or compromised then I think history will prove you wrong (if the cards ever get adopted).