With regard to the pax with their carry on baggage, I was at an operator's meeting a few months ago and the subject was brought up, one solution was that all rescued carry-ons should be removed from the owners and destroyed, my favourite was placing a sniper on the fire truck next to the guy with the foam gun, as the foam is flowing the sniper picks off anyone carrying their baggage.
Personally I was wear a security pouch under my shirt with my cell phone, some cash and a credit card (or two)and my passport, having had to evacuate an aeroplane in a hurry as a passenger, I found afterwards that those four items would have made life an awful lot simpler.
The same pouch sits next to my seat during every take-off and landing at work.