This thing arrived. I had it in the mail yesterday but I've been on a business trip all day and rushed home to make it to band practice and when I came home, I was done for.
Tonight, I finally found the time to give it a first test drive.
The very short version:
It's a magic tone sweetener that is capable of a low gain drive.
The slightly longer version:
I tried it early in my signal chain, where the bass output is not bumped up and the signal is not very hot. With the gain at minimum, you get a clean signal. With the gain at noon, you can detect a hint of hair if you listen closely and with the gain maxed the amount of dirt I get is what most overdrive pedals yield with the gain around 9-10 o'clock.
The taste & texture of the dirt has a hint of 100W speaker driven at 120W - it's very cranked amp feeling. The dynamics are great. The lows stay clean as long as you don't dig in. Double stops make it sing.
There's a two band EQ that has very useful highs, I can get a lot of definition back, but the sound result does not feel like a modern HiFi bass sound, but more like a crisp and precise old school vintage sound.
In that regard, it works fairly well with my flatwounds.
I ran out of time, so I could not deep dive into it. I do want to do that ASAP, though - I'm really looking forward to it.
I already understand why people run this as an always on pedal because "it tightens up the sound". It could be that there's not too much versatility in there, but if it does the one trick very very well, that's alright.
....side jacks, though.