Believe me I’m very content with my harness being within the ninety percentile group and for all practical purposes that much is even an excess since I only utilize it for renfaire garb for now.
Then again well intentioned and civilized divergence has always been an incentive for me to delve deeper into the research material. It is the company and opinion of such an esteemed gathering as on this forum that helps me solidify a vague and possibly contentious concept into a more precise perception for which I am grateful for all who participates in this discussion.
If I was to summarize, my opinion of all historical accuracy conceptions (and in some cases preconceptions) it would simply be that no one should ever make the claim of an item being 100% historically accurate unless they invented a time machine and travelled back to the period in question and fabricated that item utilizing all the methods, tools and materials of the time period, otherwise all other claims of historical accuracy really are just subjective.
I share your sentiments, Sir Brian (even if my comments are a late addition to this string).
I personally like your harness and if it works for your persona even if there is no factual basis or historical reference, so be it. It looks good and fits a historical pattern that did exist at one point. None except those of the time period can actually attest to what was, only to what we presume to be a standard of armor wearers of the period. Even if researchers find factual basis, historical authenticity is not always "accurate" as we find more about of our past (or in essence, reminded of things we actually did practice at one point in time).
Armorers could only do what they had the skill to do (w/ the materials they had at their disposal) but those with the skill could invent wonders for those with the right coin even in early days. Even historical effigies are not going to give every account or historical depiction of what may have existed in a specific time period, but it can always be inferred as possible unless ruled out completely...
I try to make my persona a mix between myself and what was time period, and reflect it both in my armor kit and weapons. I prefer to make my persona more factual or historical than LARP-like or fantasy-based (which could pretty much go anywhere your imagination can take you). Just some food for thought, and like anything else, it's my opinion and subject to scrutiny. It's trying to find a balance between who you are as an individual and the depiction of who you are trying to portray that makes your look come together.
Historians are always going to scrutinize as scientists do over accuracy but artisians who respect the skill will just look on your armor kit as either a "creative wonder" or a "common-place piece" (as most everyday on-lookers will). Either case, it looks good and fits you perfectly so why contest what works.