I'm having more success with Frances, though you might not be able to tell from this picture. She was preparing to dart away in this shot. I'm able to pick her up and hold her in my lap with moderate success. She isn't too keen on the idea of being handled when I'm not holding her, but she usually settles down and almost goes to sleep while I'm holding and petting her. I'm hoping she'll rub off on her sister, but so far it seems to be the other way around.
I knew this was going to be a lengthy process going into it, so I'm not really discouraged. It probably would be a LOT easier if I already had a domesticated cat from which they could learn. I may pursue this idea if I can procure a good example cat.