Ivory ferrules can and will all hit similarly if you buy from the same source who knows how and from where to cut ivory. Ivory is one of the heaviest ferrule materials to use on a cue but that doesn't make it wrong or bad. It makes it different than other materials and most will agree that nothing hits quite like an ivory ferrule. You either love it or hate it or you buy into today's "technology" with less is better. I'm a believer in play with what you like and practice with what you play.
As far as the 'squirt', 'deflection' and whatever other terms can come into play, I think in many cases it's mind over matter; if you don't have a mind, it really don't matter.
When you play with a cue and shaft, you are practicing and getting accustomed to that particular equipment. Your mind is compensating for any short coming/adjustments and causing you to aim and play the way you do. If you play and practice with a low deflection shaft, your mind is compensating for any short coming/adjustments and causing you to aim and play the way you do. The point is that regardless whether you play with a broom stick or you play with a low deflection, low squirt shaft, your mind is compensating. It's the practicing that makes you better and not only is it just practicing but 'perfect practice' that makes one better.
I don't know if a low deflection, low squirt shaft will make a "C" player into an "A" player but I do know that perfect practice will in many cases. Will a low deflection and low squirt shaft make a better player, can never be proven but practicing with that equipment will in most cases make someone a better player. And, practicing with any decent shaft will make most a better player.
No one can ever prove that this particular product or that particular product will change the way you play and make you a better player. There is no way to quantify that as we all play differently and playing better with any given product is, in many instances, in fact most instances, in the mind.
When I was in stroke, I was in stroke (long time ago). I tried a Predator once for about a month and had to get use to it. My game was about the same but I had to learn all over again. The point is that regardless what you play with, you have to get use to it. Once again, it's the mind dictating the stroke. I then went back to my regular shaft and it took several weeks for me to get adjusted again where I felt comfortable playing.
I am a believer in hard work and if you work hard at practicing perfectly, you will achieve the best results of maximum playability for you.
Will a low deflection, low squirt shaft make you play better? I honestly don't know but I do know that if you practice and practice perfectly with whatever you choose, it will make you a better player. I know OB builds a quality product using quality goods with quality American employees right here in the USA. That is a far cry from their closest competitor using foreign ingenuity and cheap labor costs to maximize profits here in the USA. Quite frankly, that company is a predator upon the marketplace.
If you want a specialty shaft, the decision is simple: American quality -vs- cheap imports & Madison Avenue marketing. Gee, that's a tough one!