All i can say now is that it sounds great. There is a lot of versatility from the electronics package. However this is my first fretless bass and i'm not great at getting the tones i want out of the bass. I know they are there because I can hear some notes ring out fine, but my fretless technique and especially my intonation is currently non-existent. The innate tone without EQ does sound rather manring-ish on the high strings, but remarkably similar to my Sonus on the bass strings (loud, middish, authoritative and punchy). The sustain is ridiculous - the strings can ring out for 20+ seconds usefully.
I didn't find the strings to be more or less springy than the Sonus. We're using the same gauges.
Action is ridiculously low, something like 2mm at the 24th position. Extremely comfortable to play, more than my Sonus. Build quality is excellent, but we already knew that. No neck dive, hangs comfortably.
I'm primarily a church bassist so I'll be taking it out for its first worship rehearsal this week, so I've got my work cut out for me regarding intonation and stuff.
...it appears a lot bigger than I imagined it would be. Somehow I still can't wrap my head around how the bass case is positively tiny, while the bass feels, looks, and weighs like a full sized bass (this one is 9.9 lbs). The bridge, for one, is absolutely massive. The portability has gone way up, however. The headstock (what's left of it) no longer sticks out above my head catching on doorways and public transport, and the 1 lb weight saving over a few hours 3 times a week can really add up.