Well... today being a statutory holiday, I got the chance to play around with it and tackle the learning curve. More of that will come tomorrow at band rehearsal.
One startling discovery (for me): how good the rig sounds when I'm sending the pedalboard through the fx loop. I've never been a fan of loops, actually never used them in a band context, only a few cursory tryouts at home and almost everything I've read about them told me not to bother. But this one's something else ! Another benefit: it quiets everything down, to the point of being practically noiseless, as opposed to using the regular input.
Is there a settings thread somewhere ? I started browsing over the 83 pages, but haven't seen one. Always nice to see how fellow bassists use it. I'm using flat settings for now, which seem to work well, but I'm still searching for a good midrange / frequency combo.