Not if it's in a different location.
Discussion
You could keep your PIN in another location. Or use a 2-of-2, which is the exact same thing.
Yeah, you could... or you could have a decoy pin.
But if I were the one pointing the gun to the head I wouldn't believe that at all. A pin is something you remember, a strong passphrase is not.
A decoy PIN would fix this. A 2-of-2 would as well to some extent.
It does not matter what they believe, because if they want to kill you, they probably will.