Ask HN: Ordinary user focus groups re: perception of regular SSL cert vs. EV SSL

Specifically I'm looking for documentation of focus groups or polls conducted of ordinary, non-technical end users, asking them their opinions of the trustworthiness of an ecommerce site with regular SSL certificate (standard lock displayed in browser GUI) vs EV SSL (green bar with lock and company name displayed in browser GUI).

With EV SSL certificates at $99/year now, and the paperwork not too onerous, it seems only logical that any site accepting credit cards online should be EV.

I'm looking for data to support this assertion.