I don't know. I guess it depends on who you are. The brooklyn ADA told me that it's virtually impossible to get a weapons charge for carrying a knife that doesn't obviously breach the law, unless it's an add-on charge that accompanies other criminal charges.
It's neither a productive endeavor, nor an easy conviction, if the person has a good social standing and no priors. A DA won't waste his/her time on it. That isn't to say that you can't get arrested for it. But again, same rules apply - if the weapon doesn't LOOK threatening, and if you're not detained for unrelated criminal activity, few people are going to waste their time trying to get you in trouble. I don't do drugs, I don't steal, and I don't engage in any activity that would otherwise get me in trouble. I am a medical professional, and my knife is a utility blade and rescue tool. Not only is it a good excuse, but it is also absolutely true.
That being said, the previous poster is correct (and I mentioned it as well) - ANY locking knife can get you in trouble if the LEO wants to stretch the law.
You can beat the rap, but you can't beat the ride. The fact of the matter is, weapons arrests are a high priority for NYPD. Even if a conviction doesn't result, a defendant will still likely incur costs and have gotten the oppertunity to make some new
friends.
Weapons violations can be very easy to prove at trial. Here is the actual jury instructions for 4d. misdomeanor criminal possession:
http://www.nycourts.gov/cji/2-PenalLaw/265/265-01(1)1.pdf
The people only need to prove 2 points-
1. That the person possessed the weapon (including that the weapon was in fact a prohibited weapon)
2. That he did the same knowingly.
This is very straightforward. It is presumable that a NYC jury would not have a background in weapons, and would be very open to whatever the state's wittness tells them it is. Remember alos, that there is a negative stigma towards knives/weapons in NYC.
If the defendant has any prior criminal record, they can be charged with 3d. criminal possession of a weapon, which is a D-Felony, and carries a theoretical 1 year mandatory minimum sentence (IIRC).
Also, remember that most cases are disposed of before trial. Just under 84% of felony defendants plead out, in queens at least. The numebrs are comparable elsewhere. Presumably, the numebrs are comparable for misdemeanants.
The fact of the matter is,
there is a broad spectrum of (reasons that constitute probable cause to justify a search when an individual has (negative) contact with law enforcement. This really should not be discounted. Of the cases that go to appeal, the search itself is usually the issue in question.