I've had the Salt I for awhile. Used it all last summer for everything from harvesting vegetables in the garden to riding fulltime in my fishing vest. Mine is a PE yellow handle. I never had a problem with rusting or discoloring it sharpened...okay, but it kept a pretty decent edge. My only gripe was that the H1 seemed to scratch a little easier than say...VG10, and didn't take an edge as easily as say...S30V ...for me.
I just got the ZDP Delica this week. What a sweet little knife. It came with scariest sharpest factory edge I've ever had on a Spyderco. I haven't had the need to resharpen the ZDP yet.
Weight favors the lighter Salt just a touch
I like the clip design better on the Delica...for comfort. I give kudos to the Salt's clip in being heavy duty, easily removed and cleaned etc.
I plan on rotating both of them through my EDC, if anything I'd be inclined to use the Salt more.
So I guess that's my answer...they are both designed to be used, I'd be less apprehensive in using the Salt based upon price point and the H1.
But that Delica is sweet.