My helmet from 3 years ago:
It doesnt look that bad, but I still bruised 1/3rd of my brain, broke my left eye socket, and moved my upper teeth.
I wouldnt want to imagine that impact with one of those skid lid open face helmets.
I may wear an open face helmet if I'm riding my cruiser down the street to grab a burger. But if I'm on my sport bike or my sport touring bike on the hiway, I wear nothing less than a full face helmet, riding pants with under armor, triple-stitched gauntlet gloves, a riding jacket, and race boots.