4th job Single Target DPS

Oh pomegranate, I just realized Dual Blades aren't using Final Cut at all. Does anyone know how that works post-BB?

Not quite sure what you mean by not using at all, the buff it gives and the duration is lower than in pre BB. However, is it a must learn skill and I still use it to this day. Unless you mean fatal blow, then yes nobody really uses that anymore. Because macros are limited, at most you can throw in 1 upper stab in between chains of hell when the dark sight fails to keep its form. There's actually room for 2 upper stabs but, its tough to keep track of during bossing and requires quite a bit of concentration and button tapping.

edit: woops, I mixed up final cut buff thinking it got nerfed, but thats only in chaos patch. The passive increases added by shorter duration is the only changes to this patch so far. As to the post below me, thats kinda odd, I thought dusk stuck it in already hm. Well, I guess I'd want to see new results then.