Man those little grafts look epic. I think they will both grow well. I grafted a lophophora onto a pup of a t. pachanoi a little while ago. It is still hacking, and even though there is a new pup coming of the main 'trunk' (next to the graft), both appear to be charging.
Hey, where did you acquire the pereskiopsis plants from? I'm not sure if you mentioned that or not?
I would love some to try this sort of thing too. Onya Dazza, good stuff.