Wenger and Victorinox have a sweet racket on army knives. The one the army buys for each recruit doesn't have a corkscrew, so they know they'll always sell a second one (bought with private funds) which does.
In the days before silverware was part of a table place setting, "alternation" of males and females at a meal wasn't just polite, but ensured no one was too far away from a knife.
https://www.youtube.com/watch?v=9Ry4QBQejFU