My understanding is the Verizon 5g phones have the MMW modem that only supports Verizon, but the other modem for wide band 5g and LTE is generic and should work the same as the unlocked variants. However, Verizon prevents unlocking the boot loaders of the phones they sell. If you manage to unlock the boot loader, you should be able to install GOS just fine and use any sim you'd like.