I Dropped that skill, personally.
The dueling part, I personally feel, was poorly written, a it really just ends up being the Caster with the most Power points wins.
The Channeling skill seems to work just fine for both Ideas.
Could easily be used to attempt to "Burn" each other out with a contest of "Power" and "control"
And it can be easily adapted to recharging a magic Item.
I don't think the skill was intended to "Charge" a magic item with a specific Spell, Just with power points. If you want to Create a magic Item with the power of a specific spell, or add a power to an already created magic item.. there are already plenty of Rules/Spells to cover the creation of magic items.