I spoke with an austrian Wood/glassmaker and to see if he would do an oregon glass blower spiked jhook and He told me that normal glass hooks often broke after they cooled down. It only works with boro he said and he didnt have it.. I saw myself with a very Long spiked j hook in my intermediate Future, but it didnt Happen. Maybe i ask these chinese dudes.
This was the man
Ask @glasscharlie he made me a super amazing saxophone style J hook. UK based but sure he'd deliver to Europe