Thought I'd start a primers topic so easy to find in the search. I used the ardex primer a while ago as had a free one. Not sure on name blue light blue colour. I used it on ceramics and it stuck on them great. Unlike f.ball p131 which I find can come off as you walk on it.
Bet it's pricey but works well. Got some laybond primers in stock now. Will bring one down to the next forum day Matt for you to test out.
One of my fav primers was Uzin Pe360. I was with Uzin the other day and they found my secret stash of it at the training center. Was surprised to learn its not current any more