Quoted from CNN:
The change in rules, expected to go into effect December 20, will allow for some scissors less than 4 inches long and some tools less than 7 inches long.

This says they will be ALLOWED, not DISALLOWED

A former coworker of mine, a known pro-gun control advocate, did mention after September 11th, that if someone had a gun on any of those planes, it probably would not have made it into the building. Speculation as only Flight 93 apparently had any real clue what was going on.

The government is only suppose to protect me from what I cannot handle myself:
1) Explosives aboard aircraft
2) Mentally messed up pilots
3) Aircraft maintenance and design problems

Everything else in the cabin is pretty much up to me.