My first try with Galaxy paper—I contributed to their Kickstarter about six months ago, and they went to Russia to get some paper coated with a fast emulsion, and it arrived this week. Many people were annoyed when the purported reversal paper turned out to be ordinary (but fast) paper, with reversal processing required. Harman make a direct reversal paper and it was hoped this would be the same. For myself, I am happy with the product save for one annoyance. Most photographic printing paper has an ISO of 3. This is said to be 125, and I metered it that way, allowed for a third of a stop of bellows compensation—my 450mm lens was extended to 600mm to focus this close—and it came out just right. My only problem is that when looked at 100% magnification there are all sorts of black speckles on the film. I don't think these are from my water supply.
Chamonix 10x8, Nikkor 450mm/f9, Galaxy paper negative, Ilford Multigrade developer, Epson V850 scan:
Chris