I had played with Karl several times before (FG-karlshouse-jan2013, FG-bradshouse-jun2013, FG-RAP-october2014). We had also all played together in various larger-group ensembles (PGTFD-CMCholiday_bradbook_party, GFMt-bradshouse-jan2016), but this was the first time Gregory and I had sat back and processed Karl's guitar, with our own sounds added in of of course!
Karl does a fair amount of DSP on his guitar signal, so we didn't do a huge amount of alteration. It was more that we all worked together, contributing sounds to the over mix.
A very nice ending to the week.