Pull what, I don't think the emergency brief (after power checks) is part of the pre-flight safety brief for passengers. You have briefed your passengers already, before starting the engine and before walking out to the plane.
You don't get on an airliner and here the Captain tell you what speed he will rotate at, and what he will do if things go wrong. This is purely for the examiner. He needs to know that you know what you are doing, and flying the plane as you intend to (rotating at the airspeed you say will; climbing at the airspeed you say you will etc.)
Thank you, as an airline captain with over 30 years experince of heavy jet aircraft I can assure you are I am familar with both the passenger and commanders or take off briefings. You are confusing the two briefings, which have little to do with each other-one is a legal mandatory requirement on all aircraft, the other is good aviation practice but mandatory on public transport aircraft as it is a published requirement that is contained in the CAA approved operations manual which is required by all UK AOC holders