After almost a year of weekly use...
Very expensive, very good distortion pedal. Search Youtube for how it sounds. For the most part you will land into a modern kind of digital sounding prog-type metal distortion. Distortion sounds more like you would get from a PC DAW rather than analog black heavy dirt growling. Takes very little time to find a tone you like, since most of them are good.
A bit of a headache to use as a PC audio interface, disconnects sometimes, but did not spent too much time working on it. Would not buy this thinking it will be my only audio interface for PC, to be used 12 hours a day. But it technically can.
For the tuner: the first 3 EQ bands together create the letter of the note, from dots: A, B, C and so on. If this does not make sense to you, imagine you connect all the dots in the EQ and look at the pedal from far away. Could not figure this out without contacting Darkglass support, which by the way responded fast and accurate.
It does have an option to import tones created by the community via PC. They are not that many and not that great, but such option exists. But this is a feature you can do without, no problem.
Easy to use, hardy, easy to understand what it does. Only 3 slots to save your tones unfortunately. Has a slot to be connected to whatever other piece of equipment you can think of, except a potato.
Oh, and yes, it does cut through the mix (in metal). Get any bass and new bright strings. Drop the action so that the strings hit the fretboard when you pluck. Use the pedal with not even that much distortion. Success. If you must insist to be heard, increase low and upper mids from pedal EQ, and maybe treble a bit.