A couple of observations about jumping with your playing cue with draw:
1. Proper form dictates that you keep your feet flat on the ground and maintain your normal upper-body/grip-arm stance. For jumps, this means you have to choke up on the grip, bend your bridge elbow, and get your face closer to the CB. If your cue is bottom heavy, it becomes hard to keep it from wanting to "fall" backwards, in other words, the part of the butt behind your grip starts to weigh more than the rest of the cue in front of your grip. This can limit the effective vertical angle that your cue can tilt before the overall balance point moves behind your grip, causing the cue to tilt up.
2. Because of friction between the bottom of the CB and the cloth, a center hit on the CB (on the equator as seen from the cue angle) will cause it to actually pick up some follow as it contacts/leaves the table surface. So you'd need about a half tip of "low" to accomplish a normal stop/stun jump shot. To get draw on a jumped CB, you need to hit way below the "equator" (again, as seen by the cue's vertical angle).
3. Just like with the break, the energy you transfer to the CB can only be converted I to two things, spin energy and translational energy (barring friction-related heat, etc). If you spin the ball, it will not jump as high, regardless of the type of spin. So if we're drawing, we need to hit the jump shot much harder than normal to achieve the same amount of resultant spin.
4. Low deflection shafts CAN jump, but when you're hitting low on the CB, LD's tend to miscue slightly. This is not the same as the classic bar banger miscue jump. It's just that the shaft is "willing" to get out of the way, so there is less force available to keep the cue tip engaged with the CB surface. A CB jumped in this manner will still have some Backspin, but not as much as a regular draw shot with the same below-center hit.
5. As the CB bounces on the cloth, it tends to pick up forward spin (or reduce backspin) more than a normal shot. This means you have to put a lot more backspin on the ball than a level shot for a given amount of draw, especially if the OB is a little far away.
Overall, I would say IT CAN BE DONE, but you have to really exaggerate the speed and tip placement to effectively jump-draw a CB with a LD shaft.
Just my observations.
Good luck!
-Blake