Actually you do want to. Since you can use 2 xp runes instead of 1.
Ah, okay, so it's about a portable xp booster. There are several item shop weapons you can equip at level one, they are intended as skins, they serve well for various leveling purposes. Most of them are only for sale during special events. The Snowflake Festival Tree drops during the Snowflake Festival, there's bound to be a few stashed away, you might be able to holler for one on global.
There's also the Coastal Wooden Hammer, not sure how to obtain it.