I spent last week at the Robinson factory safety course and Mr. Robinson brought this subject up. I don't think the Nomex suits are meant to be a get out of jail free card for a crash, but rather another tool to improve your odds should a crash occur. Having spent several days discussing safety and watching home videos of helicopters crashing and listening to accounts of accident investigations not one person in the course (that I know of) considered it a CYA safety notice. Tim Tucker led most of the presentations and he seemed very sincere about improving pilot safety.