They don't jump well at all, and if they did, then they wouldn't be "LD". Only one person I know trusted me enough with his REVO to try it about 20 times. I just gave up because even with the object ball at about 3 feet away, I felt like I had to break the stick to make the jump. I finally did make the jump and I didn't break the shaft, but I wouldn't do it again (although I didn't pocket the ball... I just made the jump).
Carbon fiber is probably on the top ten list of common materials to _NOT_ use for a jump stick, it just doesn't make sense to use a low density material unless you're just trying to sell it. Can it be done? Sure, but just because you can do something doesn't mean you should... unless you just want to make money.
Jumping topic, but this thread made me curious for a couple hours about high density CF (which apparently isn't a thing, not even mil spec/license stuff), but on that journey I found Balsa wood. I'm not a cue maker, but Balsa wood looks amazing for its density, I imagine you can make some light weight butts out of that, which is exactly what I'm looking for right now as I do _NO_ want to 3D print a butt. I'm wondering just how low weight Balsa butts can go.