My reaction to this, is that if you are in any doubt at all about your legal jeopardy, is that you should carry a Swiss Army Knife. There are some good substantial ones, and I think any judge and jury would laugh any case out of court. I would hope a prosecutor would just not prosecute a case against someone with a SAK.
It's a joke I know, but I guess you have to deal with fools such as they are until the law gets clarified.
Tim