I've smoked Lakelands, but none of the floral aromatics that some people refer to as grandma's bath mat by smell and taste. Other than those, I wouldn't bother with designating pipes. I designated one cob for Mixture No. 79, but found it is not necessary. I think designating may become more important for the majority who build cake, so there is residue from each tobacco. A minority of us scoop out the ash, then wipe out the chamber with a rough paper towel or napkin. That leaves just the thin carbon layer that serves the purpose but carries minimal if any taste or smell. Also, this eliminates the need for owning a reamer unless you are restoring estate pipes. Also, it maintains the chamber size which is, to me, a good thing. I concede, the majority prefer to build cake. I don't argue with that; I just don't do it.