Howdy! This is my pedal. One side is a heavily modified comparator fuzz to get it to behave properly, with a BMP-style tone stack that boosts rather than cuts the mids at noon, as many fuzzes get lost in the live setting due to their lack of mid range. The other side is reminiscent of an op amp Big Muff with a lot of changes to get it to sound how I liked it (again, more mids), followed by a unique tone circuit that I happened upon while breadboarding it that I won't detail here. The blend circuit is from R.G. Keen (the one we all use, in the box on the left of the first page
here), but the comparator fuzz is a very, very aggressive and loud circuit, so it needs to be tamed for the blend to work "evenly".
On a bit of a personal note, I've sold less than a hundred of these in the year that it's been out, and I build them in a 10'x10' spare bedroom we have in our house. I am a very small builder (read: one person that's been doing this for barely a couple of years, so I'm sure plenty of y'all know a lot more than I do at this point!), and I'm trying to transition out of the service industry after 25 years in it to do this sort of stuff full time (or at least try), and I think it would be rad if you took your two favorite fuzz circuits and threw a panning circuit between them to create your own dual/parallel fuzz - that's what I did, and you might like it more than this even!