OK here is my experience with the GSM part:
Device: Telus TP2
Location: Guadalajara, MEXICO
Carrier: TELCEL
When I received the TP2 i put my mexican Telcel SIM in it, it said that since it had detected a SIm card it was changing to global mode, then after a while it said that it was an invalid SIm card and switched back to CDMA mode.
After putting in the unlock code it read the SIM and registered in the network without any problems.
So at lest the Telus TP2 IS locked for international SIM's, but CAN be unlocked so you can use it with any SIM.
I also tried an ATT SIM and it worked fine.
Saludos
Vinny