Yeah this one confuses me. I get the concept, and I love Big Muffs, but it doesn’t seem like a good place for an interface. It seems like a really awkward place for one.
A Muff is hardly the last thing I want to run into before hitting a DAW, and it doesn’t seem worth the latency of an additional round trip DA/AD to come out of digital just for a Muff and then go back in