John:
I've been using Ink Jet Technologies Premium Edition Art Canvas for about 6 years, and spraying with Rosco clear Acrylic Gloss Glaze #5580, diluted with water 1:1. I ran a south window test for 8 months with coated vs non-coated, and with various other substrates printed on the HP, with no apparent change compared with dark stored samples printed at same time. I think you should be able to find a Rosco dealer in Atlanta. The price per gallon is half!!
J.
