Your wish is my command.
This has never been a plant to grow very tall, nor to have many flowers, but it does double every year, so perhaps it chooses to put its energy there rather than flowering.
I now have six of this clone, the others are in two different pots where I am experimenting with the compost. Two of the smaller tubers are in a totally inorganic mix, perlite, pumice, grit, and are growing fine, but until I see next years replacement tubers I will not know how well this works. Two slightly larger tubers are in the same mix as these but sitting in a layer of gravel. They will flower soon.
If I have spare tubers of anything I tend to start experimenting with composts, looking at two things;
which grows best and which is best for avoiding the dreaded neck rot which is the curse of hardy growers everywhere.