is there any reason to use "spinning slash" combo on drk?

[Cabalabob]

You don’t want to use it but you may have to.

I take it you’re new so you’re probably in grit full time. If so, you will never need the power slash combo, but you’ll be doing a lot less damage than you could be. If you’re out of grit the dps might start nipping at your heels on enmity, it’s in these situations you’ll want to power slash to give yourself an enmity lead without going back into grit.

As to your question on how it works. It generates enmity 5.5x the damage you deal to the target (more with dark arts). So if a dps does 100 damage with a skill they generate 100 enmity, if you deal 100 damage with power slash you generate 550(without dark arts) enmity. And it’s only on the target you hit. If you want enmity on all targets you need to use a skill that hits all of them like unleash or abyssal drain.

SE in their infinite wisdom decided that we don’t need to know the multipliers attached to enmity generating skills so if you want to know the different modifiers for your enmity generating skills you can find them here.

https://www.reddit.com/r/ffxiv/wiki/enmity