Are all Verizon iPhone 5S are GSM Unlocked globally? I am getting an iPhone 5S, Verizon version from USA and I plan to use it in India (on a GSM network). I read that Verizon iPhone 5S are GSM unlocked globally and can be used anywhere in the World. Is that true? Is that for only select model numbers/batch? Or does it apply to all Verizon iPhone 5S?

PS - I will be not using 4G/LTE, only 2G/3G is enough.
The SIM slot on all Verizon 4G LTE devices is unlocked from the time of purchase.