Leather will get scratched, no two ways about it. I have a leather settee and leather recliner chair, both are scratched, as Horza says, when they jump up on it/slip off it
, unavoidable I'm afraid - but I actually got leather in preference to material because so many material sofas got totally ruined and ended up looking rubbish with threads hanging/stuffing out, etc. Leather, although scratched, still looks good.