Hasn't that limitation been removed with LTE, or is Verizon still unable to do simultaneous voice and data for some other reason? The Sprint 3G network had the same problem, which is one of the reasons I dropped them.
Yes Verizon supports simultaneous voice and data. In actuality, they route all their audio connections as VOIP over the data connection (VoLTE). Which has the same effect.
Sprint still drops data connections during voice calls.