despegue,
As I'm sure you're finding out from reading here, it is indeed considered SOP by many operators to know the EOP for the runway you are landing on, particularly if you are SE and know there are terrain issues in the go-around.
Kirks Gusset,
You are not guarenteed making required climb gradient S/E for the Missed Approach from the minima, let alone below it. And I don't mean in a piston twin. I fly 777s, and even the -300ER won't make 2.5% under some conditions, and there are also approaches with higher than standard gradients required.
Under those circumstances you are stuck either with higher minimas, or the requirement to plan a non-standard MAP. In either case, the aircraft will not make required terrain clearence if you flew the standard MAP from below the minima.