Vaal Pact + Vitality/Spirit Void not working on my Scion

Hi,

I've recently unlocked the Scion class while playing on my Duelist, and I figured I would give it a try.

I really liked the Leech traits I had picked up on the Duelist, so I figured I'd rush them early.

However, having picked up both Vitality+Spirit Void and Vaal Pact, I'm seeing no leech of either life or mana on my Scion.

I appreciate that my level and damage is probably low and that it likely would limit the amount of leech I would see, but I'm seeing nothing at all.
Having Vaal Pact, it's quite easy to determine that no life is restored on hits.

Can someone think of a reason for why this is happening? Am I missing something, or have I hit a bug?

Note that I can get _some_ life leech by socketing Life Gain on Hit, but only on the supported skill while I would expect Vitality Void to give me leech on all physical damage.

Thanks for your reply!

I suspected something like that, but I wasn't sure how the math worked out.
I'll keep going and see if I can get enough damage to trigger this at some point then.

[Edit]
The build just came online as I got some new weapons, I guess I just started it a bit too early.