Like all other SVLTE phones on the carrier, Verizon or it's subscribers paid for it one way or another.
All evidence points to no. With the 2014 Verizon Moto X using eCSFB, It would be overly complicated to make an exception for this phone. Up until now, Verizon has been the oddball not using a single transmission path. Now that they can use eCSFB, why would Google make a hack-job phone with SVLTE for Verizon/Sprint?