It's a neat idea, but for public signage, I'm not sure there's much value in aligning the braille dots with the visible characters. Tactile letters and visual

It's a neat idea, but for public signage, I'm not sure there's much value in aligning the braille dots with the visible characters. Tactile letters and visual type can coexist quite easily on the same area without interfering much with each other, so what's the problem? I could definitely see this as an aid to learning braille, I just don't see it causing a big change in accessible signage.