One thing I've struggled with in using dirt/fuzz in a live band context is, despite how good it can sound on its own, the bass seems to get lost in the mix, even when blended with a decent amount of clean. I'm guessing that's not something you're finding but I wonder if it's something others have found and what they've done to solve. In my case I've ended not really making much use of my fuzz in a live band context.