Tammi,
I read the article in the Superior site and all it did for me was raise questions.
I made several adapters so we could use the C&C machine quilting thread in the straight cardboard spools on our vintage to antique machines.
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These spools are crosswound and work just great on my adapters. Of course the adapters are drilled a bit over sized so they can turn but we've used this thread on basically all our machines with good results.
Also, the Guttermann thread on regular spools is crosswound too and we've got no problems with it. So like you said, the article on the Superior site must just be for their thread.
As for that drilled spool pin, I bought one of the two hole versions some time back and put it on my SEWMOR 404. It fit perfectly and I've used the holes exactly once. I threaded a couple of cones through the pin for a photo op.
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To tell the truth, I like my widget I showed on page one better.
Joe