Thanks for your input, Timo.

I have grafted Violeta on a sucker of an adult tree. It's only a sucker, but the tree has more than 30 years, so it can benefit from part of the good root system and has lots more energy to grow than usual.
I don't think it's comparable with grafting on a cutting, even a good variety that roots and grows well.

Grafting directly on an adult tree has given me even better results in terms of speed of production (i had cuttings producing figs 5 months after being grafted) and overall aspect of the cultivars grafted, maybe this extra energy can explain, in part, why the graft of Violeta thinks its an older tree ;.)

An example...

This cutting of Negronne was grafted in March, had is first leafs in April and has figs in July:


    

Picked a Yuge one today even though it was not quite ripe. Ants were making a concerted effort to puncture a crack in the side so it was now or never.

 

   

Puts on lots of figs, just about a year old, rooted around last December

 

Woohoo! Beautiful!

Fruit looks delicious. By the distance between the nodes, this tree looks to be a very rapid grower. Congrats on the fruit and tree.