Hollowed Fang Bloodrinker question

Grim Dawn Gameplay Discussion
1

I play a bleeding conjuror mainly using COF and the vines. If I put a Hollowed Fang on a weapon would the 25% chance for the bleed damage of Bloodrinker be added to my skill damage or is that only for weapon attacks where I would swing the weapon?

2

Only weapon swings OR skills with a Weapon Damage component like Calidors Tempest

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