I started work on this Silverberry a few days ago. Young piece of nursery stock from a local garden center. Plan is to treat it similarly to Olive, hence the late summer root work and cut back.
Will have to decide on the direction of the apex in the future. For now just going to see how this develops.
@Grif Yes, you are correct. Lengthening to attain better taper.
@Reno_David Yes I think it helps keep branches stronger during development, as they are suppressed by the sacrifice branch or branches and the comparative lack of auxin being accumulated.