Default [Q] Thinking about getting Moto X

I currently have a Nexus 5 and compared to a friends Moto X my screen isn't nearly as nice and the speaker is horrendous. I'm thinking about reactivating my Verizon unlimited data account and using a developer edition Moto X on it but I have some questions.

1. Who updates the Dev. Edition Moto X, Verizon or Motorola?
2. Will my Google Wallet app work like it does now with my Nexus 5 and allow NFC purchases at "Tap to Pay" stores or does verizon block that even on dev phones?
3. A bit off forum but if I use Google Voice texting, can I delete my $30 texting package on Verizon? I heard GV texting uses data only.

Thanks guys n gals!