Looking into this question now like everyone else. Visited one LBS and the guys did not know much more than the basics. I had to explain to him what trainer road was. Since they talked openly about riding till it got down to 20F I guess that makes sense.
Visited another LBS and not only did they do a better job walking me through the basic option but when I mentioned trainer road me said to come upstairs. They were in the midst of setting up a bike + wahoo kicker snap and Zwift. He said to come back later in the week and they would have a working setup to try out. He said they decided to set it up because they polled their best riders they were all switching over to Zwift. All his riders had not only been using it but had also been setting up rides with one another.