|Fresh from the Herald Grab Bag:|
Q. I was wondering what other procs will stack with Omni procs, and how many different procs can be placed on (1) piece of armor using Alchemy?
A. The Lady of the Jewels says that only one proc may be placed on an armor piece by an Alchemist: As for the first part of your question, if you are referring to whether more than one armor proc can proc at a time the answer is no, only one can proc per time your are struck by an enemy. The piece of your armor which was struck is the one that has a chance to proc.
Just a side note, once a proc is put on a piece of armor, it's there permanently. ~E.