Printing totally defeats the purpose of carrying concealed and IMO can get you in trouble if someone realizes you're doing it on purpose. Aside from the fact that no one thinks you're cooler or bigger or badder just because they see you're carrying a gun. Most likely they'll just think you're a cop or they'll call the cops and let them sort it out. Your permit can (and it does happen) be revoked if they see you misusing it. Realize that the presence of a gun to the uneducated public heightens any situation... including just a plain old shopping trip.
No, there are no additional benefits for a permit holder if you're allowed to carry open. I don't have a problem with those who do carry openly, it's just not for me.
As g23 stated, the general public is SEVERELY misguided on firearms. For instance, you have no idea how many conversations I've read or had where some uneducated public Joe thinks that Loughner used an AUTOMATIC weapon to shoot what's her face. "We should ban those types of guns. There's no reason why anyone of the general public should have a gun like that... " ? It was a semi-automatic hand gun.
Moosie