PSA Regarding Weapon Valor skills.

So I pullled a Summer Tiki and Have Axe Valor on her (Wanted to get as much SP as possible when leveling her) and was lucky enough to pull another one. With the current bonus to SP going on right now, I thought I'd try to level the other one up and decided to throw my higher leveled Summer Tiki with Axe Valor 3 on the team, and found out the effect actually does stack, so I'm getting a whopping 12 SP per kill in the training tower! Just thought I'd relay that!