I don't quite get the scenario. I have a money belt with some items in, and that doesn't make me a spy. If I were somehow caught up in a hostage situation while visiting a bank, it might get overlooked. I like to carry a hacksaw blade in it - I've seen Saw.

For evasion I agree with the comments about using a magnetised bit of metal as a compass, so I know which way to run. Good quality clothes and boots will be important, if you get to keep them. A bandanna has many uses and will likely be ignored.

Something that just occurred to me is getting a cheap watch with a steel wrist-band, and either pre-honing the clasp into a blade or else doing it in the field.