Boy they are vigourous plants. And the geneticist in the family reminded me that this was typical of hybrid vigour.
(I had to check. Also called heterosis the increased size, strength, etc, of a hybrid as compared to either of its parents.) So with blackcurrants and gooseberries as the parents Dutch plant breeders have created a monster.
The most delicious monster there is. My freezer is groaning with the fruit.
And that reminds me. I need to put another batch in the second freezer I had to turn on to take the volume of fruit. You have to love a glut.