Hi, I haven’t tried making origami type objects, but you might find that you can manipulate vertices and faces in the way you want just using Nomad’s existing tools and capabilities. In the post linked below I describe poly modelling techniques that are possible in Nomad (there might be more, but these are the ones I know about). Pretty much everything I’ve posted on that thread has been made through creating topology and manipulating individual vertices within Nomad, so perhaps that will help you with ideas on how you can create the origami objects.
I would be interested in seeing one of you origami works, (even if you used blender).
Do you have iPad? If you do a great option is to buy Cozy blanket app (lite version is about $20), you can then rough sculpt in Nomad and create whatever clean topology you want in Cozy blanket.