Good info. I had started FWH all batch's bittering additions out of shear simplicity and laziness. I always use a pils malt due to availability in my area, thus a 90 minute boil. And unless using someone else's recipe, I do any remaining additions after 20 minutes. Thus I have over an hour of clean up time from the mash... much more considering it takes me almost an hour to hit a boil at the moment. I never did a back to back, but was happy with the beers. Good to see someone did the test.