Another knife to consider is a small folder from AGRussell. They make 3 knives from 2 to 3 inches that are very thin, very sharp, and very lightweight. Their Titanium folders are not throwaway priced but not unreasonable. The 3" and 2.5" are lockbacks, the 2" is a slip joint.

Usual disclaimers regarding COI.

Andy
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In a crisis one does not rise to one's level of expectations but rather falls to one's level of training.