Yea, I know the higher pH is targeted a lot with stouts. Based off my recipe thread I decided to mash high but add the roasted barley late to bring the overall pH down to get closer to that Guinness style taste (there seems to be some debate about the whole Guinness tang, definitely interested in what the final pH of the beer is)
My thought was once the beer is done it may be interesting to try to adjust the final pH, at least in a glass at first, upward and see which I prefer and which is closer to Guinness. Sounds like the increase may remove that bit of tang but add some smoothness?