Limitations of mods that proc

[CityLineProperties]

What are the limitations of mods that proc?
Can Splinter, Hit Spell, and Life Leech all proc on a single hit?
What about splinter, hit spell, life leech, mana leech, stam leech, mana drain, and hit fatigue? Can they all proc on one hit?

 

[Picus of Napa]

I think there was a patch which stopped splinter and hit spell but I was under the impression the rest are all a separate "dice roll". Someone else should know for sure.

 

[Ender]

Mana, stamina, and life leech can all occur in one hit, and I no longer use weapons without all three except in situations where life leech damages you.

 

[The Black Smith]

They can all proc
With the exception of splintering with disarm and infected strike weapon specials, supposed to be injected strike too but it is bugged and still procs with injected.
(Players have a 15 second immunity to splintering)

on double strike hit harm and hit lightning can proc on both the strikes whereas hit fireball and magic arrow will proc once only. Same with whirlwind, hit harm and lightning can proc on all targets, fireball and magic arrow only one target.