Indeed, that's all fine and, largely, what I was suggesting in the earlier post.
So we need left rudder to prevent that ..
.. however, if one is at, or very near, Vmc, one doesn't have any left rudder remaining to play with .. else Vmc would have been lower (assuming we don't have to contend with rudder stall for instance). Indeed, if there is no bank, rudder becomes more limited and Vmc, necessarily, would be expected to increase. So what does AB suggest in that (near Vmc) situation ? Surely not to relax rudder ?
What one does at higher speeds, where rudder is not limiting, can be tweaked as might be desired. Wings level and a small loss in climb is a lot easier than trying to fly a couple of degrees wing down to get that last bit of climb. As to the final adjustment for drag, AB would have more than enough models and FT data to provide crew guidance via whatever beta indications.
For the AB, do you fly out OEI wings level or with favourable bank ?