Follow up on my experiments. I tried the 4 testers at the 1 month steep test yesterday. I had 2 SF, and 2 complex mixes. I'm not going to go into specifics on each individually as over most results were the same.
Oba Oba, Bread Pudding, and Coconut Complexity had flavor, but it was much weaker and for want of a better word, more dull in flavor when compared to my usual 30/70 blend. Almost one note, all the highs like the bright vanilla and cinnamon were muted to a mediocre level. I'm thinking the whole PDO removed bitterness also means it removes those top notes as well.
The closest match was the Third World Custard. It was actually good, still had the thick mouth feel and custard flavor, so it was good, but not great and not as good as the usual 30/70 either. But the vanilla part of it was dulled. Tasted like a buttery custard missing vanilla extract.
I would have to make an all VG mix to compare fully if the flavor is better than all VG, and therefor worth the trade off for those with allergies. However, being the flavor whore I am, at this point I will stick to my usual 30/70 mix as it's much better.
Overall, I am sad about the poor practices and issues that have come up from the this company throughout this thread, as well as the fact that something that was so promising to those of us with PG allergies has not proven to work as hoped.