I recommend hat mounting unless you're really up front near the PA speakers. Some have said that the 12 inches or so vertical distance doesn't matter that much, but it can make a difference depending on where you are in the venue. If there's anyone standing in front of you and their head is between your mics and the sound source, it will affect the sound...which will be a little more muffled than if you get direct sound from the source. Girls are shorter than you and that means if anyone talks to you, they're speaking directly into your mics. If they're on your head, they're a little bit farther from the talking, which can make a big difference due to the masking effect (during loud shows anyway).
When I recorded from my hat, if I needed to turn my head or sneeze or cough, I just pulled my hat up off my head and did whatever needed to be done. Just leave a little bit of slack in you cables. People are constantly adjusting their hat on their head, so it doesn't look strange at all.
My 2 cents worth.