Ain't It Always The Way...Backdrops Drop Back - Try Manfrotto
Paper or cloth, there are issues. The paper gets dirty, rips, runs out...the cloth sheets get dirty, attract glitter, feathers, lint, and wrinkles. A solid wall with wallpaper works very well for one or two shoots and then starts to intrude into every visual idea like a nightmare.
Eventually you long for the wide open spaces or macro work.
Mind you, there are times when the Superior paper roll backdrop or the Promaster muslin drape are perfect - fresh out of the bag or box they can provide a clean space behind the subject that subtly supports the point of focus. You need to move your lights so that this happens deliberately - ignore this and the back bit can overpower the front bit very quickly.
Worthwhile making sure that your chosen suspension system is also up to scratch in a structural sense - I dropped a 2.75 metre paper roll on a sitter once when the backdrop support system tilted over and it was only by dint of fast talking and an offer to bury the body at sea that I got out of trouble. You can be certain that I have secured the rolls ever since in a Manfrotto triple hook rack with the Expan holders. You can support the paper rolls on the portable stands as well, but make sure that the tripod legs of the stands are out there doing their job effectively.
If you're going out in the field the paper is replaced with muslin drape. If it is literally out in a field beware of the uneven surface under it and of the previous users of the field - particularly if they were cows. Some stains never wash out. If it is in a carpeted interior, pin or tape the drape down at the edges - people can trip over anything.
And sometimes you are lucky - I hauled out two cloth drops and sands for last night's costume shoot - and found that the venue had enormous freshly painted off-white interior walls. Leave the backdrops and stands in the car? Don't mind if I do!
* I won a Posture Pin in Grade 2.