I have quite a few pipes, by my lights anyway, so I'm not fussy about it. If I smoked Lakeland aromatics, I'd confine those to one pipe or set of pipes. As it is, I move freely between English, Balkan, various tobacco-forward aromatics, burleys and burley blends, Va., Va./Per, and so on. Some people are sensitive to Latakia as a ghosting factor, but I don't notice it, or perhaps it is a pleasant addition to other blends and I don't even think about it. I guess people with extra sensitive taste senses have the luxury of acute appreciation of flavors but also have to be more careful about residual flavors. Like I say, I'm not particularly fussy.