I've personally found 2 of them myself. And I only lived in Cyrodiil during the last MYM and haven't been in there since.
Now, the Thesis that only drops from BGs to get the 150% version... that's a unicorn.
I just don't find the concept terribly useful in the first place. None of my pve toons need their alliance war skill lines higher than 6, and all of my pvp toons get to level 10 pretty fast it seems. Not sure who these things are supposed to be for, honestly.
I have found 2, one while doing dailies in Cyro, the other while riding between 2 objectives, wasn't looking for them either time, just kept my eyes peeled was all. Seriously though, until folks start realizing what these potions actually do, they are pretty worthless to try and sell.