Crushing would hurt, but I doubt it would cause permanent damage unless one side relaxes. For example, arm wrestling. Both people are squeezing each other's hands pretty hard, and it certainly might hurt, but there is no chance of permanent damage unless one side overexerts or completely relaxes without the other doing the same.

And anyway, it doesn't matter. He is dead. I just got back from Star Wars, I killed a primal vampire...this has been a good night. Now...how the heck will I kill that other vampire...Yami, what might I be able to see with my ethereal sight?