Ken,
This may be a moot point now that we cannot use Eco Print Shield on Epson canvas anymore, but according to the Premier Imaging instructions, the proper way to apply the EPS was to use two or three coats of gloss first (thinned no more than 20%) and then a final coat of matte or satin to give the final appearance desired.There may be some difference in the gloss that softens the canvas more to help eliminate cracking.
The site also says that if using non water resistant canvas, to spray with the standard Print Shield product first then use the EPS to do the additional coatings in the same order as before.
I am really P.O.'d that Epson has eliminated the old canvas but they must have their reasons.
I would rather not have to use the standard Print Shield , it kind of negates the advantages that the EPS offered.
David