Seems the answer is more complicated than that. I am currently trying to run my phone in dual SIM with Mint (T-Mobile) as primary and Verizon as secondary. The Verizon SIM only works if I set the "Data service network" option to Verizon. If it is set...
I really hope so. I didn't realize that it didn't support it until I received the phone today and tried to install Peridot, eventually finding out that it wouldn't let me download it because of the lack of ARCore support, and sideloading the APK does...