Vougier's Contus

Anyone worked out how the double attack works and if it affects all jumps?

Not as far as I know.

If/when I get it I'll gladly do some tests.

Bump. Anyone?

Ive had it for awhile, but i dont use Jump very often. And im unsure if it does anything for spirit/soul

How hard is the NM and anything I should know before trying to kill it?

I tried to kill him once but we had bad job combos and gave up quickly.

From what I have noticed, this is a very very nice polearm. When you jump(this includes the new jumps) it gives you a temporary double attack effect. Which also stacks with any other jumps that follow the initial one. It seems to lasts a few seconds, maybe like 15 seconds or so.
I was DRG/RDM while using this outside of abyssea, and the double attack effect seemed to proc quite often. I can't give you any %'s or any math to go with it, but from my own usage I have to say its a polearm that's worth getting. You can think of it as a aftermath effect.

The NM is called Empousa. It can be duoed with MNK and WHM with a little bit of difficulty. key is to ground it asap when it begins to fly and don't get killed by dread spikes. I usually save my TP after 2-3 WS and wait for it to fly then immediately WS as soon as it's up in the air, usually only takes 2 WS to get it down. Nuking is not wise to get it down because it will absorb magic damage while WSing, which it will spam.