I must say that I am happy with the results I have experienced with your product, as it has performed as you have claimed in all respects to overlay preparation.
One one site I removed Marley tiles, removed most glue with scraper and placed your primer over that.
Second site was a B&B with some major cracks. This customer has had a bad experience with a previous contractor whose work has cracked after only 4 months, due to neglecting to repair cracks prior to installing his overlay.