I also got a box of fruit from Marta, and a bunch of seeds last year. Aravaipa grow the fastest of almost any varieties I've tried, most of them are easily twice the size of similar age Duke or Mexicola seedlings after a year now. But Marta did mention to me once that she has Aravaipa grafted on her Mexicola tree, and I've noticed occasionally the Aravaipa seedlings are smaller and look more like Mexicola, so some of them are probably crosses. Something to keep in mind for anyone else growing out her seeds.
As far as flavor, I agree they were only ok once ripened and also that they rot quickly. I ate the skin rather than scooping or trying to peel it. The skin has only a mild taste, unlike Bacon which is bitter.
My own graft is big enough it can probably hold a few fruit next year, but maybe not for a couple years. Fingers crossed!