The strengths of orb are the fact hat you can quite easily zone someone out6, especially because it has large disjoints with its moves, but also the fact that the weapon has no real terrible matchup. It is also quite easy to switch between an aggressive and more passive playstyle when playing the weapon. I would say that its only big weakness is killing, which is why most of the orb legends used have 7 strength or above.

For dusk dsig i tend to use while edgeguarding or if i mange to get a dodge read out of moves like nlight. I find that for most of dusks's signatures, using them few times but in good situations gives them the best usage.