I don't think Vanity has much to do with it. I know plenty of guys and gals that can carry a room; some are beautiful people, most are not. I personally believe those of us capable of public interaction have to take that role. It may mean missing a contact or 100 on field day. It may mean Attending local VE sessions to shake the. New Techs hand and offer a genuine welcome. In any case, most know if they've got "it" and "it" far outweighs a name placard or ugly Trucker Hat.
You may have read where I posted about ordering an alternative styled Name Badge. I did this anticipating just what I typed above. The alt style badge "feels" more like a name tag most are familiar with from work. It's less 1960's nerd and IMHO a little more professional (at least for the younger crowd).
Be there, be the first face they see, make a positive impression-get to them before Bubba does with his 'backey running down both sides of his mouth.
But if that's not you, smile and be polite as you work the world