Customs officials in some countries are pretty dim and arrogant. I've heard of the same problem in China -- with specially cut ultra large format film!
Cheers,
R.
Good to see your name Roger, been a while-- If I can recover a bit, I may yet show up on your doorstep with a good bottle of something worthwhile-- potable at least.
Add TSA folks to the dim-- I was told the x ray density of paper matches some of what they are looking for-- I gave my good friend Zuzana two boxes of Oriental Seagull paper to carry back to Seattle, -- I processed a few sheets to check for fog, it was fine.
TSA gave her an argument about opening the boxes, promised to open it in dark, yada yada, to verify that it was paper, and of course, opened it in the light in a back room managing to totally destroy it.
Some bulk films can survive somewhat, I have found it relates to the density of the unprocessed film-- e.g. a roll of color is much more likely to cost you only a few exposures, and BW is more likely to be quickly totally ruined.
Square books in your luggage will get it opened-- you know, the movies all have the dangerous stuff in square blocks--
Regards, my friend,
John