I've been thinking about this while trying to find canon art of the honourspear; iirc, when the blades were first made, Honour reached into themselves and pulled out a splinter of light that shaped into the blades - Honour made them as swords. I may be wrong on that but thats how I remembere it.
Kals blade manifested directly into his and Syls hands instead. I'm guessing since they were reforging the oathpact, they were able to leverage it to splinter the chunk off Honour themselves instead of Honour handing it out, and therefore they were the ones with the Intent that shaped it, and (especially after the dance scene), those two are perfectly in tune with wielding a spear, it is THEIR weapon, its likely associated with their identity to some degree.
