I've never tried Timeless. I have used Clearshield with a sprayer (Fuji) with no problem and with a roller, both on Canson Artist Canvas and on Canson Platine Fibre Rag, printed on an Epson 7900. To be safe from ink smears from the roller, I sprayed one coat of Hahnemühle protective spray, and rolled my first pass with just the pressure of the roller's weight. Subsequent passes were with "normal" pressure. Someone told me that I shouldn't need the protective spray coat with canvas that has dried for at least 48 hours. I haven't tried that yet.