I'm surprised many here seem to imply that crew should be given special treatment over pax.
The fact is airside is sterile. It doesn't take a genius to realize that a crew member might just be bringing something airside for usage by somebody else somewhere else.
I say over-vigilence is better than the opposite. It might **** some people off - but thats the price we unfortunately have to pay.
Personally I find if you treat people with respect, they often respond likewise.