Any advice regarding the carrying of one of these in NYC? The Rucksack is the one I received in a trade. Has a 3.5 inch locking blade that seems extremely difficult if not impossible to flick open. Also has a saw, bottle,can opener,awl and corkscrew. I work occasionally in the city, and would actually use the saw while working. In the event I'm searched by law enforcement,assuming I am not violating any laws,would this knife be otherwise legal and safe to possess in NYC? Thanks