
Well, I'm not one to let any art supply go to waste if I can help it, so I ended up applying a coat of Colour-Fix Primer to one of the sheets and it actually worked! The paper did buckle a little but a quick mist of water on the back then overnight under a pile of books solved that little problem easily.
I bought the CF Primer on a trip to Jerry's ArtaRama quite a while ago and have never used it. OK, I was chicken to try it as I'd heard it could end up streaky and uneven but I didn't feel I had anything to lose with the Tiziano paper. Actually, it went on very easily and while there was some streakiness, it wasn't all that noticeable after applying the pastel. It shows up slightly when the painting is scanned but a scanner will sometimes pick up every grain of sand anyway.
The painting above was done for an OSWOA exchange and I was very pleased with the way it came out especially since it proves that I don't have to let this paper languish in my paper drawer!