With newer LTE phones, Verizon "world phones" (i.e. phones with a GSM SIM slot alongwith the CDMA stuff - For eg. iPhone 5, 5c and 5s) already come GSM "unlocke

With newer LTE phones, Verizon "world phones" (i.e. phones with a GSM SIM slot alongwith the CDMA stuff - For eg. iPhone 5, 5c and 5s) already come GSM "unlocked". This is apparently not out of the goodness of their hearts but because of some LTE spectrum agreements with the FCC. The kicker though is that the phones will favor the Verizon network while in the US.