Admit it, you've had to bite cigars open because you either misplaced or forgot your cutter. You've probably also wound up with draw problems as a result. These guillotine cutters are a great solution.
Are they the most durable or sharpest cutters you'll ever use? No, but they're inexpensive enough that you can grab enough to keep in all those places you might need one, like the deck, the garage, the tackle box...you get the idea. So pick some up and you won't have to gnaw at your stogie again.