IMHO, there are several factors at play. First, any new product that deviates from the norm experiences this in any market unless it is really revolutionary, has a big advertising budget, and/or benefits from good market timing. Something of a human nature issue.
Second, the vast majority of us reached the same initial conclusion we did at dinner without further analysis:
Third, there is a contingent of people that were trained to carry a spare mask and also don’t analyze it any further. The argument that a mask can fail is valid, but I have never seen it (beyond straps and smashed in the boat) in over 50 years of diving including commercial, probably because I choose more robust masks. There are a number of pretty delicate masks on the market. However that argument doesn’t address the reality that it is better not to lose you mask in the first place even if you do carry a spare… which can also be lost.
Fourth, it isn’t an earth-shattering problem desperately waiting for a solution. To my surprise, what I discovered is the big advantage of my experiments is it is really convenient to gear up with the mask hanging over my shoulder. Eliminating concern over losing an expensive prescription mask turned out to be a nice benefit rather than the main reason to clip it off.
That is a generous offer but I doubt I would use it since all my gear is already set up with my home-brew version. I never dive without a suit for abrasion protection, even in tropical water. I would be happy to collaborate with you on product development. Just send a PM.