I use them ONLY for ease of getting them out of the case.... The better cases are a little longer, and rather than "dig" for them, the JP's make it easier to grab..... and they look pretty good to boot.
exactly, for the last year and change i been carrying a old porper case and with jp's the cue would be a little long and wouldnt be protected by the case, so they are laying in my closet.
when i'm using a case that's longer then yes i put them on for decor or to make it easier to get the cue out(depends on the case)
i love j/p's but for the reasons stated, i never treated a cue in a way that the joint would need some sort of additional protection.