I admit it: My Sporeggar rep grind started out as being about the herbalism bag, but I stayed for the Exalted rep to obtain the adorable pet. The Cenarion Circle on the other hand 1) had no pet and 2) was the bane of my existence when Silithus was a new zone and my druid had to farm rep there healing guildies as they slaughtered the annoying (then Elite) bugs.
Thus, my tailor lacks the CC herb bag. One of these days I *will* get around to doing the grind tho, and I'll be sure to pop over and re-read Psynister's post on the CC rep grind.