Seems to me that the first time I ever heard of "loud pied" -- it was several years ago over on the UPA forum during a discussion of a particular bird, and one person called it a "reverse pied" and the other called it a "loud pied."
 
It was definitely not a silver pied, and I don't recall anything about white eyes... just the proportion of white to color was greater than half, giving the effect of color splashed on a white bird, rather than white splashed on a colored bird, as @connerhills explained here about reverse pied recently.
 
Of course the UPA doesn't narrow down the term "pied" at all...  so it didn't seem likely to be "defined" exactly, but I'm wondering if there is a preponderance of usage to mean one thing or another...  I seem to recall something about Australia in that long-ago discussion, seems like maybe their terms for some things were not the same as ours in the US.