I have never soaked nuts ever---the very idea sounds bad.
With nuts it is fairly simple----when you have had enough, you forget about eating them.
PEOPLE never chew nuts well enough, so making nut butter gets more your $$$ health wise. Otherwise nuts should be chewed to a liquid before swallowing and the only thing our body can really use is the OILS/SUGARS/MINERALS and all the solid material is waste.
Making NUT TINCTURE would make sense and probably open an entire new herbal product line---but humans always refuse to buy tinctures that they can recognize the names of, so I am sure no one has wasted their time making nut tinctures. ACTUALLY, if your into herbs and understand herbs well, using the nuts from what trees makes allot of sense---but just a none salable product. EVERYTHING from large trees makes sense for human health.