Personally, i can't get Quick Cast to do ANYTHING and Arcane Channeling is just a longer way of storing the charge - and it can only be done in combat.
the method for channeling is to activate it, then cast the spell at a hostile target, then it will store and you can deliver it with a sword blow. thing is, that hostile target will get an attack of opportunity when you cast the spell, so you may as well just cast it on him, as far as i can see.