Stush, I have first dibs on any of the variegated plants in those pics. They are drool worthy. I have purchased many of trifasciata 'hahnii' group and have managed to kill everyone of them. I only have the dark green one that seems to survive my care.
I do not water so I am thinking they need more regular water than I provide my plants normally. I have a problem with watering plants more than every month or two in the winter and they die in the winter in my care.