I have never worked with modeling chocolate myself but I have seen them on TV using it for sculpting. Is there a difference in using modeling choc. to gum paste? When do you use gum paste for figures and when should you use chocolate? Also, is modeling chocolate the same as chocolate clay?

I believe modeling chocolate can easily be seamless if one right.

Yes modeling choc and choc clay are the same. Basically a choc and glucose mixture. Gum paste dries hard while modeling choc remains softer and never really solidifies. It is good for covering rkt and modeling simple flowers. Choc also softens fairly quickly in heat and humidity so figures tend to lose their shape. I would choose at least a 50/50 gumpaste/fondant mixture for modeling figures. hth