IMHO all EFATO's at any multi-crew airline level should only be conducted in a simulator. If said airline cannot afford that sort of training, then maybe they shouldn't be allowed to operate.
Back in the late 90's a young collegue of mine was undergoing transition training on the company's RPT metro. After a grand total of one hour on type, the next phase of training was to be V1 cuts at night. The check captain occupied the LHS, my young friend occupied the RHS, and a third student sat down the back.
Wise beyond his years, the RHS student questioned the wisdom of such a maneuver, especially considering his lack of experience on type (as recorded by the CVR). The Check captain (also relatively young) assured him that it was legal, he had done this sort of thing before, and so it wouldn't be a problem.
The aircraft failed to achieve stable flight after take-off, clipped power lines, and crashed inverted approximately 1 kilometer from the end of the runway. Both students were killed and the Check captain escaped with non life threatening injuries! The airline folded shortly after.
There end'th the lesson.
O