It's not a moustache bar. It's the Nitto North Road.

Why would it fail? It has been working for me for ages.
I like to always keep my right hand fingers on the lever in order to stop in a moment. I don't want levers that are difficult to reach. I never feel safe riding a bicycle with drop bars, drop bar brake levers are extremely difficult to reach.

Do you want to say this less stylish incarnation of the Dia Compe levers are much better?