j.t.:
(a) at much lower than normal speeds (at/near Vmc) one needs to crank in some bank (certification limit is 5 degrees) towards the operating engine(s) to achieve expected handling characteristics. Achieved Vmc is very bank angle dependent. Climb performance is not the name of the game at this sort of speed .. staying right way up is. Indeed, there may well be no climb in this speed region .. the aircraft often will be in a descent.
What about in a Part 25 transport jet OEI where V2 is achieved during rotation and lift-off? We were taught to keep the wings level unless we ran out of rudder. I believe that happened only on our old fleet of Convair 880s.