I checked with HP; that particular media is only compatible with the latex printers. This doesn't mean you can't feed it through another type of printer and print on it, but.. if someone has a problem using it in a non-compatible printer then at least it's not on you to 'make it work'. Plus, I would be concerned that their prints are not stable. The latex process is very different from an aqueous printer like the Z6100. I'd almost bet that if you wet your finger and rub the print, the ink rubs off.
I'd recommend they try/use the HP Everyday Adhesive Matte Polypropylene or the HP Universal Adhesive Vinyl.
I'm attaching two PDFs, one for latex printers, and one for the aqueous printers that lists the compatibility of the various HP medias with their printers.
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