My experience is not nearly as vast as some of the other posters here but my experience has been that most catchers have fought me about taking them off an then thanked me later . Most of them came back later and said that they felt quicker with out them on . I don't demand that they remove them but just ask that they at least try it my way and then make a decision . The one thing I find somewhat irritating is when I have spotted someone wearing them incorrectly (High on their gear) they seem to fight harder than anyone that the placement is correct and that the kneesavers are indeed needed .