Creating good demos for wearable technology is hard. You certainly can make fancy simulations like Microsoft for their Hololens, but the devil is in the details. It's mainly about how it feels and you need to experience the technology to figure it out.

I don't see much to be gained from demoing prototypes to general public. If it's main blowing - great, but does not really make a difference if you can't buy it. If it's less than mind blowing, then you will just ruin everything. Even if you then later improve the product to the mind blowing level, most have already made their minds.