There was a huge staff of professional photographers at EK when I was there. They did not do lab experiments, they did the type of work, in the field, that any pro did! We had elaborate studios with sets and props and all of the studio lighting equipment you could imagine, and we had labs for them to process and print int.
So, these methods were tried and perfected by true professionals.
I might add that we had a fairly large staff of "Kodak Girls" (and guys) who were used as models both indoors and out.