When I was learning I took everything my perceived elders said seriously, one of which was dedicating pipes. I went as far as having three pipes dedicated to two favorites. By the time I quit I smoked aro's in cobs with maybe six pipes dedicated to a specific blend. I think it comes down to how much adulteration you can appreciate and how much gets in the way of the current smoke. Dedication is one of the pipe myths the forums support that take time to sort through to find out what you yourself think.