Cool. I confirmed with nnotis too - his PICO is working with the international version. My PICO will hopefully arrive next week (at the same time as my Beyerdynamic T5p!), so I will check with my international one then. I have a garnet red AT&T S3 coming to me also (will SIM unlock it for use here) and will check that too.
Tonight I'll be posting my new porta-rig photos to the "Show us your head-fi station thread". WHOO.