Greetings vMixers!
Mission Accomplished!
I finally was able to do a successful YouTube, Multi-Camera Live Event Stream after having several failures. The reason for the failures was I was trying to use an under-powered, dual core laptop. The stream button on the dual-core laptop where I have my 2nd licensed copy of vMix 17 keep going orange.
Two encoders were used. On my desktop I used vMix 17. On my i7 laptop, I used the $10.00 version of Wirecast for YouTube.
One thing I was wrong about is that I said you did not get audio from camera 2. You do get audio from both encoders.
During the LIVE event, the viewer can see the actual live camera switching. After the live event the viewer has to switch the cameras manually.

UPDATE: Post live stream mobile viewers do not have an option to switch cameras.

The video is below if you’d like to view it.
~George

https://youtu.be/WKYiLNFSsyM