Red currant ornamental cordon

[Drew51]

This thread has a lot of info on cordons

Ribes Family Cordons, Fans or Single Trunk Bushes

I was looking into training Ribes recently and came across the possibility of training them as a cordon, a single trunk fan or a single trunk bush. Obviously that’s beautiful, but wouldn’t I sacrifice some production? It is my understanding that the standard way to prune Ribes is to remove 3-4 year old trunks or shoots from the soil to keep the natural multi-trunk bush form productive. If I had a permanent cordon that was 4 years in age, would I be losing out in production? Or is the age of the …