Do so! This is a "must have" skill, and it's worth maxing to level 5!
And it's not one you can learn from books.
<img src="/ubbthreads/images/graemlins/exclamation.gif" alt="" /> Also beware <img src="/ubbthreads/images/graemlins/exclamation.gif" alt="" />
The placement of charms is irreversible!
So for items you intend to keep until the end - save them to place only silver and gold charms