I know you're kidding and slight protruding like pictured above will certainly not engage it but this condition anyway may actually be a safety issue that companies cover under warranty. On one of my SB 3.5's, the lockswitch isn't flush. Other than it making a rare Spyderco a little less desirable, you can tell its there with its odd tactile feel of it in use gripped hard or not. It's from the lockbar sinking into the lock-well because of too much wear or too little material between the contact points. It's a recognized warranty issue as there may also be a problem with the lock and it can be sent in to be adjusted but with the 3.5 being pinned construction AND a disco'd run, I cannot replace it and chose to keep it than get a replacement value when I sent it in.