That's it. Just you two. You guys are the last ones on Earth not to have one.
Just kidding.
Way to be strong and hold out, jump cueless. Jump cues change certain aspects of the game, whether that's good or bad, is a matter of opinion. Personally, my opinion is that the game is more fun and interesting, to play and to watch, without them.
However, I feel like, all other aspects of my game being equal to my opponent, I am at a disadvantage not to own a jump cue. That is why, when I bought a break cue, I chose to buy a break/jump. If you can't beat 'em, join 'em, I guess. I'm glad that some tournaments have banned jump cues, and I hope that more do as well. JMO.
Perhaps they are "good for the game", though, as the fans in general seem to enjoy it when the 3rd dimension comes into play. I guess we need to compete with the X-games. Not cutting down extreme sports, I love skating & snowboarding, but catching air isn't why I play pool. JMO.