There are a couple sprint runs with S90V coming up, but I don't believe they currently have a standard production folder with it. You may, however, want to look at the Spyderco Southard with CTS-204P. That's probably gonna give you the best edge retention of any of the available production folders from Spyderco right now.
Almost forgot, I don't own a Southard, so that's secondhand information. Just wanted to make that clear.