Physical damage spells and leeching and lifetap?

[LucianDK]

I know you can leech with physical melee and ranged attacks. But not ones that is magickal or elemental. But what about spells that is physical? Can you leech or gain lifetap bonus from them? Like blade shield, blade fury, warcry, twister and tornado.

[Obi2Kenobi]

A rule of thumb (for the most part) is that if it uses your weapon damage, it will leech. I think... Not sure about the assassin blade skills, though.

[Snorelax]

Assassin blade skills leech in 1.10, but not in 1.09