I have been doing some testing with Eclipse. I've pretty much
decided I'm not pursuing it, but in the process wound up with some
decent RGB curves. I thought they might be of use to some list people so
you can post them if you want. They are for the 3000 and Piezo ink,
probably very few takers. They are not perfect, but there are no major
problems. Relatively dot free, 100% blacks dry down, near blacks dry up.
Directions for use-

Convert from grayscale to AdobeRGB, apply curve, print with following settings
Source space: document
Print space: same as source
If PS5, make sure PCM is off for windows, on for Mac
Advanced-
1440
Ink Jet Backlight Film
Super
No color adjustment

Any other printer, ink, or setting probably won't work