Scott,
I just ate my first Blue Pearmain- very interesting. Russet flavor: sweet, grassy, savory, cidery. Hard dense crunchy texture; fructose-like sweetness up front; fibrous knoshing at the back-end. They are big. One apple makes a meal.
They are having the festival again tomorrow too. The rain kept the crowds away today, so I had the barn of apples all to myself for half an hour. They have a bag or two of Blue Pearmains left if you make the trip.
We bought sweet cider, too. Their sweet cider is less syrupy than some, with more tartness.
Two weeks from now, they will have another weekend event- a pick-your-own invitation for the late October types.