It's hard to be nice about a product that has caused so much stress on a big show. But hopefully the manufacturer will resolve the issues that resulted in a number of crashes and erroneous failures to reconnect to the network when their signal path was blocked by large numbers of performers.
https://www.youtube.com/watch?v=CBUxwt6Vliw
Hopefully this product will evolve to match the reliability of the other systems we've used.
(But at this time I've no desire to go through the same experience.)