I find the jump cue as a great asset for those that would consider an offensive shot because it is the key element to retain confidence (or create additional) if there is no shot. Nobody (perhaps those) would perfer to luck kick on a shot they know they can't create a safety. Nobody's going to be another Efren Reyes... that's the truth. Personally, I am sort of the "young, old school" individual where I do perfer to try to kick on a safe rather than risk it on a shot; but when there is a hanger (or so) on the rise and it seems safe to say that you're confortable to hop over an OB to make that shot, then I will definately "pull the trigger" and attempt a jump shot.
There are those that still think that jump cues are for wimps and it's not the right way to play (or whathaveyou to that phrasing). Earl, this past Mosconi, acutally used a jump cue, after all those times using either his break or his playing cue, and I personally think that if he continues using that cue, he will definately break some players' hearts. Just my $.02

.