I've been using Niagara for about 6 months now and love it. Having the alphabet down the side of the home screen for immediate 2 tap access to any app is so slick.
I think I'm a typical consumer, and if I'm not mistaken we use cryptography constantly (https and banking, off the top of my head). If quantum computers are important for cryptography, it's hard to imagine "regular people" having no use.
I've been using Niagara for about 6 months now and love it. Having the alphabet down the side of the home screen for immediate 2 tap access to any app is so slick.