every single unlocked iPhone 6 or 6 plus will work on verizon.
verizon will not activate it or start a new line of service if you give them a MEID # they do not like
if you somehow activate the sim card in another verizon device, and then insert it into your iphone 6 or 6 plus that you bought unlocked, it will magically become a verizon phone and it will be happy in its verizon world
features such as VoLTE , simultaneous voice and data, Visual Voice Mail , Hotspot might take reseeding the sim card (powering up the iPhone with no sim card and then inserting sim card) to activate
those features may take a few days to eventually come live
CDMA calling works outside the box, theres no need to worry about cdma being turned off.
if anyone tells you that the iPhone 6 will not work because it is not a CDMA phone, politely shake your head and walk away
the only thing that prevents any iPhone 6 from being activated on verizon, is verizon. threes nothing in the phone that is not compatible with verizon.
the only difference is sprint models. they have 4 extra channels