The way I was mapping it out, there was complexity with how the pass filtered clean sound hit the dirt circuit. There is a gain reduction which is a natural occurrence with the pass filtering (cutting signal cuts the signal, surprisingly

). The dirt circuit responds and behaves differently than it does with a full gain clean signal. I had an IE Divaricator for a while, hoping it would shortcut what I wanted to design, but I quickly learned that pass filtering and/or crossover prior to the clipping starts creating new issues to consider. It certainly gets tricky.
The other issue with pass filtering is the fact that it is static, so if you set the filter frequency, you may get clean tones blended in on low notes, but get no blended clean tone on higher notes, if the fundamental is above the filter frequency.