I've been bitten by the tegus on a rare occasion, and it hurt, but wasn't any serious injury. I ended up with bruising and scrapes.
HOWEVER... I don't know how close a Sav's tooth structure is to a blackthroat(they look very similar to me), but I surely would NOT ever want to get bitten by Moggie or Wilson. I'm certain it would be a rather bad injury, so I'd take all precautions if I were you, to prevent a feeding response or aggressive bite.