It's all coming back to me now. At this time it seems like the only NFC payment supported is whatever Verizon's partner is on 4.2.2 toro official.
I've noticed a lot of handoffs between 3g and 4g too lately. Doesn't affect my ability to use the phone. Must be something with Verizon's network.
BTW the Verizon rep said they're getting the next nexus but didn't know when or what the name is. Last I checked this was all still a rumor.
That would be so f'n sweet if it's true.
Data handoffs: I have a working theory but I'd like to bounce it off of a few ppl more familiar with APNs. If the MCC and MNC pairs come from the towers and tell the phone what type of connections, maybe we need to update our apns-conf.XML? It looks out of date compared to the AOSP and CM versions. I threw the updated aosp one on my phone in recovery and reduced the persist.radio.APN_delay value to 1000 and the handoffs have been very, very fast. If someone wants to verify, I'll walk them through it, just pm me.