Si W,
Whatever AC you are in, whatever the circuit you are in. You need to be trained to cover any eventuality. Whatever happens in that MAGIC 8/12 Mins can kill U. Therfore you MUST be trained to deal with ANY conceivable eventuality. That's the difference betwen an OK instructor and a good instructor.
I know a chap whose flaps locked down on the T&G, he flew a normal circuit and a short field landing. He'd been trained well. And landed safely. A lesser (and less expensive!)instructor than his would have had a hell of a time in the big grey building.
