Man, this would be PERFECT if it was stereo. I just spent 20 mins looking at demos and nearly pulling a quick trigger on it. Thanks!
Then I realized I pretty much have this same functionality with a Tascam handheld field recorder. Less immediate than an always-on, footpedal-operated one like the Riff Recorder, but stereo and smart card-based. Just put it in my signal path between main out and recorder. Always a pretty good feeling to realize you have the gear you need already in the home.
Thanks for the suggestion with Riff Recorder. Still liking it immensely, might end up getting one.