As long as Microsoft is paying…
This is quite obviously something which Microsoft is paying for – both HTC and Verizon and I'm sure both are happy as long as Microsoft pays them to do stuff. The biggest problem will be when reviews of the device with Windows goes up against the same device with Android. Verizon better have a good returns / boot-to-Android policy as this device is just begging to be sold as an Android flagship (the sales reps neglecting to inform users that it's actually got Windows phone) only for angry customers to return it when they can't get whatever apps they consider to be essential for it.