In London right now.
I bought a Three SIM in London. Popped it into VZW iPad, went into Gerneral > About > Carrier and click on carrier version, a carrier update was performed automatically.
Went into Network settings, and Personal Hotspot wasn't there, so I reseted my iPad. After the reset, Personal Hotspot came back, Yay!
VWZ account page was gone, and replaced by the "APN Settings", which was already filled with "3internet", so no need to use APN changer.
When anyone goes back to the States, I recommend doing a Carrier Update via General > About > Carrier, so the carrier firmware can be reset back to the Verizon version. and you can then connect to VZW immediately.