I’ve been printing with Harman’s ‘Gloss Baryta’ (now by Hahnemühle) for many years and have made dozens of A2 prints (approx. 17x24”). It’s a marvelous paper which I can highly recommend. I have never had problems with surface scratches, at least not with my Epson 3880. The surface does have however a higher sheen than quite a few fine-art inkjet papers and this could possibly show scratches more readily than a less shiny surface would. Having said this, I might add that I always store my prints separated by a fine piece of acid-free tissue paper. Perhaps this has been the reason I have experienced so few (if any) scratches on the surface of my prints.
Larry