Personal choice
I think it all comes down to your own personal choice as to what you want to break with.
However, I do believe it depends on what your playing cue has as a shaft/tip to help determine your choice.
If you have a full sized (13 mm) low flex (laminated) shaft with a hard tip, it will probably break just fine. If you have a smaller shaft, you may have to be more accurate in hitting the cue ball. If you play with a standard maple shaft, you would get more flex and vibration, which may take something off the hit as compared to a stouter shaft. If you have a soft to medium tip on your playing cue and break with it, over time you may be losing some life of the tip and have to replace it sooner.
I play with a 11.75 mm Predator Z2 shaft or OB-2 (I switch around sometimes) with a medium tip on my playing cue. So, I don't feel that comfortable breaking with it. I don't have as much control on the break. So, I use a Mezz PB DI to break with and I love it. So does everyone I meet that tries it out. It seems to ram through the rack much harder with less energy than a play cue needs. You can feel and hear the difference on the impact of the break. If I am playing for several hours, where I may be breaking a lot, my shoulder feels much better afterward if I use the break cue as opposed to a playing cue. (I have a torn rotator cuff, so, it helps the wear and tear on my shoulder).
JMHO