The little bit of research I've done suggests that Arista.EDU is indeed Forté Polygrade V: the color filtration values suggested for both papers are indentical, for example, as are the developers and the predicted tones, along with toners...
Forté Polygrade is not developer incorporated, so neither should the .EDU paper be. I don't have any Potassium Carbonate on hand, so I can't test that out.
Having given the prints some time to "grow" on me, the neutral tone does not bother me as much. This reminds me of a time I bought 250 sheets of 8x10 forté RC, which when developed in Ilford Universal Paper developer produced tones WAY too cold. It took me a few sheets to get used to it (I only used it for contact sheets and proofs anyhow). I suspect the .EDU paper would react the same way...
Anyway, Freestyle hasn't answered yet, but I'm not too worried about it.
But I have to ask this:
Has anyone ever used this:
Brown Tone Print Developer (Agfa-120)
I haven't run the formula through my calculator, but if it's long lasting, it might be another option...