Page 74 of The Book of Vile Darkness shows the table for The Vermin Lord and at 8th level the ability "pincer claws" is gained. However, in the accompanying ability descriptions for the class, that ability is conspicuously absent. Does anyone know if any official errata exists that explains this ability? Incidentally, I just give my vermin lord (2)1D6 natural claw attacks that if successful can attempt a grapple as a free action. If there is any errata known of I would appreciate the knowledge, thanks.
There are no official erratas for this ability that I am aware of. The only indication of the meaning of this ability MAY be is in Sandstorm where on page 191 the entry for Wasteland Crawler has the following attack options:
Attack: Pincer claw +13 melee (2d6+8) or tail sting +13 melee (1d6+8 plus 1d6 fire)
Full Attack: 2 pincer claws +13 melee (2d6+8) and tail sting +11 melee (1d6+4 plus 1d6 fire
This is as far as I'm aware the only reference to Pincer Claws.
I'd be fine with the house rule you presented.