Hi there:
I'm new to this forum; lots of information. We have a Epson 9600 and also a 2200 which we use for smaller watercolour prints, photos and posters. The Epson watercolour papers we have used have produced very lovely prints. I too really like the premium luster paper. We use the 9600 for canvas prints and tried one on the 2200 the other day. There were track marks running all along the print. I have now found that a company, Premier Imaging Products sells a canvas that is quick drying and solves that problem. I haven't tried it yet but will order some soon and do some tests on both printers. Also, we recently ordered some of the Premier Art Print Shield and used it on a few canvas prints. I just stretched the first two and they turned out beautifully. I really like this spray; up to now I've been mixing my own concoction so this is easier and gives really nice results. I've been emailing someone from the company and they're very helpful and answered all my questions. I did try the spray on watercolour paper as well and it works well but with the Epson paper I don't think it's really necessary because the ink doesn't rub off like I've heard it does on some papers.
Maddy
http://www.tarrisimaging.ca