Crunchy. That is a good way to explain the effect when G'MIC oversharpens, and the image starts to look ... er... sandy, and crosshatched. I'm a cheapskate, so it's just the Gimp for me, with the G'MIC gimp plugin, and UFRaw for my RAW conversions.
I think I'll continue using RAW, except in those situations where I might want to take a series of pics without the extended waiting period.