dublinpilot,
I think I'll stick with my American bit of cardboard too. Quote from US website for getting fancy new licences:
*NOTE: In compliance with the policy dated July 23, 2002, airmen applying for a replacement certificate issued on the basis of a foreign license under 14 CFR Part 61, Section 61.75 or 14 CFR Part 63, Section 63.42, must complete and submit a Verification of Authenticity of Foreign License, Rating, and Medical Certification form to the Airmen Certification Branch and appear at a FSDO for positive identification to make application for a replacement certificate.