I started off by both rolling Timeless, a little more than a year ago, but had terrible problems with material separation in the can. It was so bad that I'd stir it up well and within minutes it would separate again. Then during rolling it would start to clump, on the canvas! It's hard to describe, but white ridges of it would form along the direction of rolling. These would eventually dry clear, but leave a heavy surface texture/characteristic to the coating. Over-rolling would be a disaster -- a bit like a popcorn-textured ceiling. I tried multiple gallons of Timeless, gloss and satin. Thinking rolling was the problem, I switched to spraying...results weren't much different...lots of clogging. Hindsight is 20/20, but I suspect BC was having a QC problem with Timeless at the the time, especially since it went out of stock for a long time. I was new to coatings and didn't know better.
I needed to get out 25 canvases for an exhibition, and was desperate for a solution. I was able to get Lexjet's Sunset Gloss coating overnight for their flat shipping rate of $10, since they have a close warehouse, so I tried that next. Honestly, I've never looked back. It seems to never separate, or maybe ever so slightly after sitting for a month or two, and rolls on beautifully. I was worried about roll lines with gloss, but it has never been an issue. The only issue I've had is all the #@$%^! lint and hair that makes it's way into the coating while drying. I learned here to resist the temptation to remove before dry.
Does anyone know who makes LexJet Sunset coatings? I've always assumed it's the same as either Clearstar or Eco, but have no idea which.
Edit: I should have mentioned that this experience was all with Lyve canvas, which I really like.