It depends on the situation really. For most things, you'll probably be good with /War (for the same reasons Mnk go /War), unless you're doing some of the higher content fights where all the DD are using /Nin, in which case you'll want to do the same. Subbing Dnc isn't a terrible option for low level farming for Haste Samba on top of the Haste you'd already be getting if you were using Soulsoother frame.
Lady Jinte wrote:
Vlorsutes' Negotiation Skill rises 0.2 points
Vlorsutes' Observant Parent Skill rises 0.3 points
Vlorsutes' Argument Diffusing Skill rises 0.1 points