It arrived half an hour ago! Hefty little box, very simple to use. The 10 minute headphone tryout went very well...sounds like an active DI with an Ampeg flair. For $200 I had to dial my expectations down a little from a B-15 with a speaker level DI

but it's a very nice sounding box, and the 3-band EQ with ultra switches is versatile but much simpler to find good sounds than something like the VT (one of my favorite pedals of all time), which has more versatility but is way more complex to dial in.
As for the Scrambler overdrive, I think the big concern people have at the moment is not having a speaker sim and sending too much high end response for overdrive to the PA. There was a post someone made about an Ampeg rep saying that you don't need to worry about that with the Scrambler, and I agree. The Scrambler's highs are already attenuated so there won't be any icepicks to the eyes or blown PA tweeters. Sounds pretty darn good, too. Dirt simple to use, voiced very well, has a pretty decent range of distortion. Won't do fuzz but will get pretty heavy. Overdrive can be pretty tricky to set up for bass, but the Scrambler takes the guesswork out of it and doesn't let you dial in bad sounds. You trade a little versatility of tone for that, but I'm finding it hard to care.
So in my 10 short minutes of messing with it, I'm not finding anything to complain about yet

It's a pretty darn useful little box IMHO and well thought-out.