You can pack just about anything you wish (within reason) in your "checked" luggage. I always pack some small scissors.
As strong as DUCK TAPE is, it's easy to rip. No real need for scissors or a knife.
Why take Duck Tape? If something happens to your luggage, you can TAPE it together enough to get it back home!
You can buy small packets of Duck Tape that are very easy to take along with you.