However on B737s, emergency turns at V2 banking into the failed engine may be fatal if unaware of spoiler turn assist problems.
Not banking into the good engine may drastically reduce the Vmca on which V2 minimum is calculated from.
So if you have the choice,turn into the good engine as it is how Vmca was calculated in the first place.(3-5 degrees).
I wonder if Boeing flight department are aware of these dangers? if so, why is there no mention of this advice in the B737 flight crew training manual? Maybe because Boeing believe the alleged "dangers" are statistically insignificant?