I'll chime in as one of those, who made something similar. It's not very official, but should work in Firefox and Chrome for all keyboard layouts, though you have to bring your own text.
This seems flawed in that it arbitrarily translates regular symbols into what looks like a graphic error soup. I feel like letter and di/tri-graph frequencies should have been considered, as well as conventional expectations (m looks thicker than i, f.i.).
http://type.trmnl.org/