Wow, never knew so many people still use leves for something else than crafting and gathering.
I join exp parties for leveling when I hit R10, and going from 1 to 10 can be done with 10 minutes of grinding, not even worth to pick up Leves for that.
I use Leves for my gatherer though, but there is just so much stuff I do with my LS, I never make it below 90 either if I don't also craft for a while.