Ghost I never got much of a real cherry taste myself, but I agree with you that it definitely requires its own pipe and it definitely needs a lot of drying time. It is a SOB to get lit...
I'm a firm believer that ALL blends belong in a pipe devoted to their own respective style.
Virginias belong with Virginias, Latakia with Latakia, Orientals with Orientals, Burleys with Burleys.
(Of course VA and burley are fairly neutral compared to their Cypriot/Syrian cousins and can be used to break in any pipe without much of a lasting ghost)
I just think that is the only way you can get a "true" flavour from a blend...
When it comes to aromatics or distinctively cased tobaccos, though, I think you have to get blend specific.
Peter Heinrichs Dark Strong Flake is a strongly cased VA with Kentucky and it will make any pipe smell strongly of black liquorice.
1792 will also render a pipe with a pretty potent tonquin ghost that will muddle the flavours of any other blend.
Aromatics, though, are pretty safe if you keep them segregated along flavour lines: cherry with cherry, vanilla with vanilla, chocolate with chocolate...
That's my philosophy anyway.
