I think you can get unlocked ones in Hong Kong...a cow-orker said that's what she did and just popped her SIM in once she got back here. She isn't around to ask for details right now, but it seems reasonably plausible.
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Rory
MkIIa, blue lit buttons, memory upgrade, 1Tb in Subaru Forester STi
MkII, 240Gb in Mark Lord dock
MkII, 80Gb SSD in dock