I use the layered approach. Some stuff on my person, more stuff in my shoulder bag. For instance, if there was a fire and we had to leave quickly, and we were not allowed to collect our things first, I could still get home. I keep spare keys in my wallet for both my car and house. I will also have either my SureFire E1e or E2e clipped to the inside of my front dress slacks pocket. Depends which one feels best in that position. My PrincetonTec Eclipse 2 will be in one of the pockets of my suitcoat.