Did a bit more searching and reading and I still haven't found a good example of any that have been grown out to the end of flower, how it effects the finishing times of different strains etc,. The main thing though, especially for UK/plant number restricted growers, is the ability to have several strains on a multi strain mother and them still counting as one plant in the eyes of the plod.
But while I was busy experimenting I had another couple of brain-farts... like doing it with seedlings but layering their stems together, super cropping and inserting graft cuts into/alongside the bend....I can feel a few mad professor challenges coming up in the next few months