A playing cue with a hard tip is not a jump cue! Get over it. The rules allow the op to do this.
Jump cues are banned because they give an experienced player even more of an advantage and a less experienced player can cause alot of damage with one.
If you can jump full cue with a Viking and a"regular" tip, you should be allowed
to do so.
I think the question is regarding modifying a playing cue by installing a break tip or switching to that cue your break cue) that isn't necessarily a "manufactured" break cue like a Predator BK, BK1, BK2 ...
Now then, if I understand correctly, Skippy says, No, you can't do that do that, several other have said yes you can because the cue is not specifically designed to break with