Hey, George. Please keep me in mind if you get viable seed! I got 15 or 20 seeds of E. ferox x trispinosus from a friend a few years ago and two of them germinated. They are both doing well but don't look anything alike. I look forward to watching them develop.
I will keep you in mind Jody. I remember seeing the E. ferox x trispinosus at your place and not really being able to see the parents in the cross.