I think it is a good thing to be thinking about, however, when you do a sim assessment the most important thing that the examier will be interested in is your flying and the amount of spare capacity you have.
It is highly unlikely you are going to get any sort of emergencies i.e. engine failure at V1, or a rejected take off unless you are an experienced jet pilot (I am assuming your only experience is pistons?). You will be fully briefed on what is expected of you before you do it. When I was assessed, the examier was not interested in you briefing every last detail, however it is worth mentioning just to show you have thought about it.
Good luck.