OK. Thanks.
The majority of that makes sense (and jives with what I consumed from the rule books).
I guess I just had a problem with "inherent," which the dictionary describes as intrinsic, permanently existing within something, or an essential characteristic. ... I sort of imagine that kind of bonus as soaking into the object or changing its core nature -- which, in turn, would make additional "inherent" bonuses stackable. ... A permanent unspecified bonus would be, in my thinking, an inherent bonus.
A case where one's own lexicon got in the way of understanding.
(It's also a pain to keep track of multiple bonus sources from various sources on one little character sheet.)