These days I most often carry:
-Case Peanut, Yellow Handles, with Chrome Vanadium Blades
-SAK (Vic) Classic SD.
-Carton Cutter, one that takes disposable single edge razor blades.
My circles of travel and some include NPE (non personal weapon environments) with Metal Detectors , wands, and subject to being frisked.
CCW, yes, except in these NPEs.
Now I have used a Case YH, CV bladed Slimline Barehead Trapper, or Stockman.
Just again while State law restricts me to a blade of no longer than 3.5", some areas have "in-house" regulations.
Total knife cannot be 3" ( must be 3" closed length) - Peanut is 2 7/8" closed length btw.
Some Restrict NO LOCKING knives, and NO blades over 2.5" .
Playing it safe, I measure from Pivot Hole to Blade Tip.
IF Health Safety Officer "requires" a locking blade, Carton Cutter is quite acceptable, and meets Safety Regs, and "not able to close onto fingers" concern.
SAK (Vic) Pocket Pal and Bantam are two other knives I have used that fit PC and Legal restictions for some environments.
Couple of things I want to bring to light.
I was raised with slip joints and lessons were then and apply today - Safety is between the ears, not on a "lock" just as firearm safety is between the ears and not that "firearm safety.
Don't laugh at SAK Classics, as quite a few emergency Trach's have been done, and I know quite a few Medical Folks that keep one handy for Medical Emergencies.
Don't laugh at small slipjoints, these too are proven in history for Emergency Medical Needs before and after SAKs became more popular and available.
i.e. Oklahoma Bombing, and the Ortho Doctor used his personal Case Peanut to Amputate a leg of a lady to get her out of that trapped situation.
He took a Surgeons kit, and these tools would not work. Time Running out, First Responders in fear they were going to have to leave the lady, as serious concerns of a "cave in" ...
Case Peanut, with its thin sharp blade amputated that ladies leg at the knee; and she then able to be extracted.
Look it up, court testimony of this situation also mentions this Case Peanut.
One should consider their environments, and circle of travel in regard to EDCs.
Remember, no tool is ever better than user of said tool.
Oh, and knives should be able to cut, and cut well!