I have not asked the makers & sellers - I wanted to be informed BEFORE I went to the LBS to make a purchase.
Just as I consider it unethical to go the the LBS for information & then buy online, I consider it similarly unethical to ply online sellers for information & then buy at the LBS.
By asking in this forum, I get the information I need to make an informed buying choice regardless of where I choose to do business. For small parts like these, though, I prefer to buy locally. Only for really obscure things that the LBS won't stock do I buy online.