Quote Originally Posted by Unoriginal View Post
And how would anyone know he is using it if he isn't actively constricting?



He is not constricting Durkon.

Maybe I should have asked this earlier, but is your definition for the term "constricting", Tubercular Ox?

Perhaps we've just been talking past each other because of that.
For general edification:
Quote Originally Posted by Peelee's Ye Olde SRD
Constrict
A creature with this special attack can crush an opponent, dealing bludgeoning damage, after making a successful grapple check. The amount of damage is given in the creature’s entry. If the creature also has the improved grab ability it deals constriction damage in addition to damage dealt by the weapon used to grab.
Quote Originally Posted by Peelee's Ye Olde SRD
Vampire
A vampire retains all the special attacks of the base creature and gains those described below.

Blood Drain (Ex)
A vampire can suck blood from a living victim with its fangs by making a successful grapple check. If it pins the foe, it drains blood, dealing 1d4 points of Constitution drain each round the pin is maintained.