Okay, after a bit more fiddling using NotMyFault's suggestions, I think I've got it. I set the Develop Assistant per the suggestions, then restarted AF, and while it started out with a very similar, washed out image, I could get a lot closer by tweaking the sliders.
I couldn't get enough saturation in Develop (even with slider at max), but after applying the Develop I tweaked it a bit in Photo (see below).
I wish I could figure out a default preset for my particular camera so that all imports from it go thru the same process.
Ahhh, okay, I got it. You need to right click on the spare channels holding the masks and select "Convert to grayscale layer", and then rename all layers (including the main image) with a .RGB or .RGBA extension.
ebergerly got a reaction from NotMyFault in DNG/RAW Files Washed Out
ebergerly got a reaction from Dan C in Saving Spare Channels as EXR Layers