The H1 isnt
almost rust resistant Masteroffajitas - it's completely rust proof as far as I can tell and a few reviewers have proven. I've used a couple of different H1 spydies in and around the sea for the last few years and so far I can't see a downside.
A yellow handled atlantic salt has become my EDC 90% of the time - mainly because I find that blade/handle size perfect for my needs. It is clipped to the back of my board shorts for the entire summer and is worn for snorkelling, sea-kayaking and fishing. The salt series are competely maintenaince free apart from the occasional rinse to get rid of sand.
H1 takes a wicked edge - as good as anything else I sharpen, even VG10 (my favourite steel). Edge holding seems to be just below VG10, slightly better than SAK steel. I've heard that this improves with sharpening as the steel work-hardens and I think this is the case with mine athough I never let my user/edc become too blunt in the first place (sharpening is a fetish of mine

), so I can't really tell.
I use my A-Salt a few dozen times per day for jobs ranging from cutting fruit, cutting nylon rope and string, cleaning grass wound-up in my brush cutter, cleaning small fish (occasionally), breaking down cardboard etc. At the end of the day it's no longer shaving sharp but still cutting effectively. 5-10 minutes with a diamond coated ezy-lap and it shaves hair again.
I hope that gives you some idea of it's edge holding properties.