^^ This
I think it is totally dependent on the personality of the snake. I only have 2 BPs and 3 corns, and one of BPs ( male pastel ) is totally relaxed and easy going in just about any situation - and I will sometimes take him for a walk around the yard - we call this yard patrol - we look at all the plants and flowers - he seems to like smelling all the different plants and remains totally relaxed during the entire experience ( body is like jello ).
My female lesser, on the other hand, doesn't seem to care much for exploration. She tenses up and is always trying to get away.
So bottom line - it depends on the personality of the animal. My male pastel that likes to explore doesn't really like it when I set him on the ground - he usually crawls right back to me - he seems happy just hanging around my neck or cupped in my hands.