I have used it on my performer and wsm and have tasted no weird flavors . I only use the kigsford comp as fuel in conjunction with my iq110 when using this method and i have found this combination gives me the longest burn with no ill effects. I have tried it with a few brands of lump but didnt get the length of burn that the kingsford comp combination gives me but no weird taste. I did have some fuel get damp once and i could taste a little bitterness in my food.
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Weber Performer,SamAdamsWeber,Smoky Joe,22.5 WSM, Weber Genesis E-310,red thermapen(the fast one)