Very impressive and imaginative application of technology. Good packaging and thought applied to user friendliness and show to show repeatability. Probably IDEAL for this sort of performer.
But pretty much "does not apply" for the majority of shows and musicians I work for. The narrator says it works because "I have NO live instruments on stage".
I always have those pesky live instruments, mostly resonant wood and metal things that are made to vibrate by carbon based life forms, to deal with. And for all of the additional hassle that causes, I generally prefer it that way.
But I'm an OLD sound guy, after all.