But... I came across this forum explaining how to successfully hack the firmware of the HV30 to allow it to be switched between PAL and NTSC. You can check it out here.
Official Firmware Hacking Thread
On the bright side, they are researching the same kind of hack for the HV20.
Crossing fingers.
UPDATE: Note the log entry made on the forum on 15 August:
"The HV20 is on its way here, it should arrive sometime next week, I have already prepared the HV30 firmware for injection, fingers crossed!"