A question about the Moto X's radios

So I was sorta hearing, like the Verizon Moto X had support for AT&T also. Explain?

Verizon will work on ATT 3-4G bands, but not LTE bands. This is the case with the majority of Verizon LTE type phones. By law Verizon must sell these devices unlocked, making them able to work on ATT and Tmobile etc, but without LTE functionality.