have you looked at a Emerson La Griffe?
(Perrin original would be better but more expensive, CRKT Bear Claw is bigger handles & cheaper but steel not as good). Small useful fixed blade, fits in pocket, very secure in hand for self-defense - MUCH more so than the street scalpel, I'd say. But I advise you handle one before you buy, to see if it's for you.
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The beatings will continue until morale improves.