Totally agree. Perhaps worthy of a distinct thread. My post was only to report on a rather silly test.

One thing -- reflective clothing is perhaps the first and best line of defence. I remember being fascinated by the hi-viz gear used by ferry crews, in Scotland I believe. Looking into the hold from the onshore pre-boarding area was like watching a sci-fi movie with aliens moving around inside a cavern. Simple 4-inch wide reflective arm, chest and leg bands. No annoying blinking. Striking. Deceptively simple (white) -- at close range you would not notice these bands.