Yes, it works perfectly! Let us know how you make out...
I don't appreciate your sarcasm, sir. You do realize this has been done with other devices, right? Most devices that are built for multiple carriers have all of the radios on the soc, and the unused ones are just dormant. With unlocked bootloaders sometimes all it takes to activate them is flashing the radio from a different carrier.
So before acting like someone is crazy, consider educating yourself first so you don't come across as an idiot
Sent from my Nexus 5
I've never heard of ANY CDMA phone having GSM radios flashed to it (or GSM flashed with CDMA) and getting more frequencies. I have heard of using different PRLs on CDMA phones to get to non-standard networks, or flashing another GSM modem to a GSM phone to get different frequencies, but not crossing CDMA & GSM.
The CDMA variants of the Moto X have an extra chip installed on the PCB to handle the CDMA duties, there is zero chance of enabling CDMA on GSM Dev edition.