As an electronic musician, I will gladly pay a premium for any device that reduces the number of boxes and wires I have to set up at every gig. (As well as reduce the number of things I have to turn on, which might decide not to turn on.)
I don't tour, only gig locally, so redundancy of anything > $15 isn't worth it. But when you have 20 minutes to set up, 10 minutes to tear down and no roadies, not having an additional device + stand + power + MIDI + audio cables to mess with / trip over / forget is worth spending money on.
If I did tour, yes, I would want backup equipment where feasible.
