Unfortunately I don't think that the level of differentiation provided in current browser implementations to EV certificates has users noticing when they get one.
I'd consider myself relatively security-savvy and I honestly couldn't tell you which of the sites I visit uses EV certs, and I'm fairly sure I wouldn't notice the browser bar change from green if a site got MITM'd with a valid DV cert after having an EV cert.
Pinning obviously helps in that case but AFAIK that works just as well for DV certs as EV.
I'd consider myself relatively security-savvy and I honestly couldn't tell you which of the sites I visit uses EV certs, and I'm fairly sure I wouldn't notice the browser bar change from green if a site got MITM'd with a valid DV cert after having an EV cert.
Pinning obviously helps in that case but AFAIK that works just as well for DV certs as EV.