I like the TT holster bags. They are very useful and don't take up a lot of room. The airlines will still consider it a personal item, though. So, this is what I do, I take the carry on bag and put the holster bag in it. If I am very nervous, I take that out bag out and have it on me. But if you are nervous about traveling with your gear, don't be. If you put the camera in the carry on, you are always with that bag. I don't know anyone who's had issues with cameras being taken if they are careful at security. I find most of the thefts take place when people are not looking at their gear while the technicians have passed their gear before they go through.