We have a couple (4) WW crabs at camp. They drop slowly over the winter as I've seen. Like Greyphase, I've not seen any lying on the ground, and we have a few still on the tree come early April. Something's eating them as they fall.
I have eaten a couple off the tree. Tart mostly, but with just a tad of sweetness. I would say astringent too. A bit of dry mouth feel after chewing.
The WW crabs do grow quickly and once they have a few years in the ground, they produce heavily. When seen from some distance, the apples seem to glow bright red in Sept. and Oct. Dull brownish-red as they age.
As for SLN, I've talked to Connor Hardiman the newer owner several times and told him about the big interest in the SLN crabs from us outdoor guys. He told me he's got more crabs grafted and plans to keep a good stock of them. They just need to grow to a point where they're good to sell - whatever his standard is.