I have a Lomax jump cue. Most are made (butts) from a very light S Amer wood - Tornillo. They are a 3 pc jumper, ala the Pred Air, but far superior. The shaft taper is real stiff & I would expect it to make a good break shaft. I think you could expect the JB to be heavier in the jump section because it's probably not Tornillo. If it was it would be very butt heavy. That being considered, I'd expect to lose some close quarters jump proficiency in the JB - just as with any other JB I've ever used.