I use an Eagle Creek backpack, which can accommodate a Bessa R + 2 lenses and a flash, plus enough clothes for 2-3 days easily. I put my film in a cordura nylon safe pouch.
I travel with a CPAP machine, so I put the blower unit in the baskets along with my Bessa and lenses in zip-lock bags. The pack and equipment used to get wiped down a lot, but don't seem to have much problem with that (bomb residue or nitrates, I guess?) any longer. By getting all that stuff out of the pack, there seems to be little if anything else to 'flag' the thing.
I do not remove the film pouch from the pack, which theoretically is opaque to the x-rays, but I cannot remember any time it was taken out and inspected individually. I find that odd, who knows what dastardly item could be lurking inside, or they are simply able to look into it anyway.
I also have evolved a routine in that I carry nothing with me except boarding pass and ID, everything else is in the backpack and goes through the scanner: Watch, wallet, etc. I figure the less reason they have to look more closely at you, the better. It also helps to prevent something like a watch from getting left behind at a checkpoint in Detroit, in the rush to get out of the check area. Not that that has EVER happened!
I have left my tickets, glasses, Swiss Army Knife, at security, and even a pair of glasses can be a costly error. Hard to complain about the cost of Leica when a pair of prescription sunglasses are marked up to $500. I have seen Zeiss sunglasses.
I have the lead bags, and I understand from fellow photographer and MD/ PhD photographer pal who worked for Picker and in Radiology, that they are not effective, but who really knows. Am looking for a Tibetan charm to protect my stuff from evil effects of travel. I am also told the vibrations from the plane loosens screws on cameras. I know a few loose nuts work in transportation.
I am thinking of including an old nail clipper in the bag to see if they find it, then I will know.
My routine is to try and put as many personal items in a fanny pack, or roller carry on, and for the same reasons as you, I try to limit the debris field to cut down on losing things while I am trying to re-dress myself. Why they can see through lead bags and not Cpap machines, I have no idea.
I understand the density of books is close to explosives, so if you have a square book, expect them to want to look at it, in suitcase or carry on.
It is hard to adjust when there are so many different interpretations, I suppose there will be a "TSA Guidelines for Dummies" soon, or should be.
I do not know if the photographer's exemption to allow an extra carry on is international or just US.
I once passed through security in a wheel chair, and was pulled out of the chair and just about violated. Finally, standing on one leg, they searched that leg, because they could not search the other due to the aluminum brace and locked knee joint on the left.
Someone had to help me get my shoes, belt, sports coat back on. When I got to Foreign soil, they took one look at my situation and kindly passed me through with escort.
I got the same treatment when I returned just to leave the airport as here, we have two security gates on international arrival, even though someone had to push me to the exit, not much of a logical situation in the best of times.
Come early, bring ID and Money for the bar by the gate, Valium in a film can, am sure their bar business is up due to all of this. Try to travel for at least three weeks so you can forget and forgive.
And, as they blocked the aisle every time one of the crew had to use the toilet, I got to stand up each time as the cart and my foot were competing for the same location. After being hit the fourth time by the passing cart, I told the Flight Attendant, next time, she would have to go out with me. No problem after that. ;-)
Hope Jorge appreciates the M2 I was bringing him. ;-)
Hello Mudder, Hello Father, here I am at Camp---
Regards, John