The temp certificate will work for your FAA and Insurance purposes. If you are looking for a job overseas and they need proof from the FAA of your new certificate your gonna have some issues. I got a new type rating and ATP back in June and still do not have my permenant. I was talking to someone at the FAA the other day on an unrelated topic and when he punched me up in the computer it still only listed a Commercial without the type. Most international companies will contact the FAA for proof. Thats where the issue will arrive.