Unlocking problems caused by gripping which pushes the lockbar down will be different from user to user, knife to knife, and cutting job to job. If you just use your blade for light tasks, you probably won't notice any problems. However, with hard use or defensive techniques, you may discover inadvertant lockbar activation (usually partial, not complete).
Another member who used to post here said he had a problem with his Endura when he stabbed a tree (simulating stabbing into someone and hitting a rib, for example) and had the knife fold. Nothing broke, but the grip he had during this unusual task apparently released the lock.
I found out my Native had this problem when I swiped at some heavy cardboard with my left (nondominant) hand. A hard hammer grip began releasing the lockbar. For defensive use, I would argue the Native definitely needs the Boye dent. Why hadn't I noticed this before? Because I always used a saber type grip right handed. But when I used my left, I automatically wound up in a "crude" hammer grip. This resulted in the flesh of my left hand pushing the bar.
Any hard or defensive use folders should be carefully and thoroughly tested under "real world" conditions before you find out the hard way that there may be a locking/grip problem. This applies to linerlocks and any other types of lock as well.
Karl