Aloha,
I travel a moderate amount. Since 9/11 I have taken several cross country and then international flights. Perhaps it has been just my luck but I have found that traveling with a folder in checked bags has not been a problem. I did however take a transcontinental/international trip in December. I had my ever present Mean Street in my checked luggage. Every time my luggage went through the security scanners, and the fixed blade shadow of my Mean Street showed up on that x ray screen, I was pulled aside and baggage searched......every freakin time. The most arduous task was trying to leave JFK to go overseas, I was searched entering security (knife in profile on x ray), then at the ticket counter prior to them checking my bags, and then at the gate with just my carry on...3 times before getting on a flight. The search at the security checkpoints entering the terminal occured at every airport entered.
I suppose that the point that I would like to make is that a fixed blade knife certainly draws more attention than a folder. (Jerry are you listening......)
All the world does not have the new found levels of security that we do. I took a trip from Thailand to Cambodia last month, with only a carry on bag......with an Emerson folder in the bag....no problem...
wabi