Didn't you attend Stealthing 101? Punk it up for the show buddy. Go to the local Hot Topic and get a 3 row pyramid studded belt ($20) get the biggest badass belt buckel you can find (not a trucker hick ass one though) and fill your pockets with all sorts of metallic shit. Bring yer cell phone, a pack of smokes that are open (they'll check em and waste more time), a lighter, some loose change, yer earplugs in their plastic case, and yer wallet in a front pocket as well, and the keychain of course. Security are usually more concerned about getting people into the venue before the show officially starts than finding some guy whose taping. If you have a knife or gun the metal detectors are gonna go nuts but other than that don't sweat it. CROTCH ALL OF YOUR GEAR!
I've taken the JB3 through metal detoctors at least 7 times and it's never been noticed so I wouldn't worry about that. Granted, they were the wands, the walk through detectors might be a different story. Basically anything metallic sets off wands, even zippers, so the security usually isn't concerned unless of course it's going off in an area where theres no visible metal. Good luck.