you would be surprised at how many banks don't use EV certs.
and frankly, I don't blame them. In many ways the EV certs are a way for a cartel of cert providers to be able to charge $1500/cert and cut outtheir competition that has ruined their prior scam of $900 for a 128 bit cert and $250 for a cert that would drop to 40 bits if a export browser connected to it (not that there are any of those around anyway)
the amount of real checking done is still not that much.