I'm kind of surprised no one has thought of this before - license the image of the iconic Swiss Army Knife for a team-based first-person shooter. I imagine a scenario something like this:

You are playing Capture the Flag against the evil forces of communism, or terrorism, or something. Due to an accident with your weapons menu systems, you and your friend have lost all your weapons except your Swiss Army Knives. Your team is engaging the communists/terrorists, and you and said friend are somehow fighting only one. You pull out the Flashlight setting on the knife and shine it directly in his eyes, blinding said communist/terrorist. Your friend takes out his knife with the Large Blade out, sneaks up behind him, and stabs him in the back.

While your friend verifies his deadness by kicking him a couple of times and taking his AK-47, you run off to an enemy SUV. You hop in, and switch to the diamond-bladed Metal Saw/File setting. You cut out the entire ignition system, cut and strip some wires, and put them together to hotwire the SUV. Your friend hops in, and you drive to the enemy base, which has a laser tripwire guarding the door - break it, and an explosive charge goes off. You switch to the Laser Pointer setting, hit your Zoom Scope, and aim directly at the reciever for the tripwire. You hold the primary trigger to provide a laser beam (which is conveniently the same frequency as the tripwire emitter's) for the reciever to pick up while your friend pulls out his Lockpick Blade (you've got to add a few things) and uses it on the door. After the door is unlocked, he pulls out the AK-47 he got from the dead guy (who has probably respawned by now), kicks open the door, and shoots everybody inside. You then return to base with the flag and score a point for your team.

Correct me if I'm wrong, but I don't really think such a versatile tool has been really included in a first-person shooter before. Of course, hopefully, the game's weapons menu systems wouldn't leave you with just a Swiss Army Knife in the first place, but it would still be incredibly helpful. And if Victorinox won't let you use the brand, you could just make something up. Of course, now that I think about it, a game where you just had a Swiss Army Knife would actually be a pretty cool game...