I see in behind-the-scenes shots of many famous photographers that they shoot with a backdrop but on location. For example a National Geographic photographer I follow had just posted one of him with an oliphant backdrop in middle of a mountain.
So my question is in this case how are they using it? If the subject is going to be fully in front of the backdrop then why not shoot in studio? or maybe their assignment includes some environmental shots and some studio shots? so they just take the backdrop on location?
For example, see this photo of filmmaker Tony Armer by Felix Kunze.