I'm wondering if they are still as strict about it?
I had bought some of those lots of confiscated scissors through e-bay - and I haven't seen those large lots of scissors available since April (I'd been away from a computer for about six months)
Some of the scissors in those lots were NICE - $20+ ones - and some wouldn't cut paper and I wonder why anyone would have bought them to begin with.
In a couple of the 300 lot ones, I'd say about 10% were excellent, 25% were crappy, and the rest were somewhere in between.
If someone wants to do damage to someone else, it seems like the ways are limitless.
Bottom line, only bring something you are willing to surrender.