[Discussion] Having multiple classes worth it in this game?

[Xayoc]

Aside from the fact that it is a bit worth it to have a multiple class due to cross-skills, aside from that, is there any reason to have a multiple class at all in this game?

PS:
I'm not QQ-ing, I just want to hear your opinion regarding this "somewhat" screwed Armoury system which is the main attraction of this game in the first place.

Statement: As being one that has multiple classes, absolutely it is, especially with CT and EX primal weapons, gearing alt classes gives one something to do when their 'main' is full i90.