Interesting topic! In many of my readings I have been partial to created term of "origamist" for describing both the, to use use a construction analogy, architect and constructor. I believe that origami is a unique enough art to require its own word (and hey, why not? :) For those asking to differentiate between the two, I like architect, as in origami architect, and the constructor/folder. Architect especially speaks to me as the architect must take into account all points of construction, many times even before the piece/opus/building is produced (the crease pattern being the blueprint in this extended analogy). He/she must understand the whole picture and what materials would work best for their creation so that those looking at their blueprints can recreate their pieces/opi/buildings. I'm not anyone can be truly right in this discussion, but it is enjoyable to participate.
Thanks! Curtis the isolated origamist