I'm new to this so I don't have an ironclad system figured out.

I do have a pipe that I've dedicated to VA blends. It is by far my nicest pipe, a pre-Republic Peterson I picked up for a song at a flea market.
I have a MM cob dedicated to Latakia blends and another I've been smoking only aromatics in.

So I guess at this point I'm picking my pipe according to what baccy I'm in the mood for at the time.

I have a couple more pipes I'm getting ready (estates). Not sure what they'll be utilized for as far as blends go. It'll be fun figuring it out though.