I have come to hate the word "Tactical", any knife is "Tactical" if you use it to cut or stick somebody, "Tactical" is an adverb, not a noun.
Having worked in security for a lot of years and hung out and been friends with a lot of police I would say that a good folder is the way to go with a duty knife. Fixed blades tend to cause considerable bleating among the sheep, even when you are in uniform. While out here in rural Montana people tend to be much more familiar and comfortable with blades, the city-folk would be an issue. I prefer the Kershaw Storm for EDC (at least for when my Bali would tend to upset the masses or the local Gendarmes), it's big and sturdy enough for just about any job but inexpensive enough to lose or break without causing undue stress, and you WILL lose or break your EDC eventually. I remember getting a little baby out of a pick-up after her idiot mom locked her inside, I busted my Swiss army knife getting the beck window open, it sucked but it was what I had and it did the job. The Kershaw is going to be harder it bust and if I do I will only be out $30, likewise I've lost a half-dozen knives in the past 40+ years and a couple of them were moderately hi-dollar blades, feces does tend to occur.