decided to re-roll ember mage since I wasn't feeling the outlander as much as I'd expected, really enjoying myself. I will say that 12 seconds of clear-casting for reaching full charge is a little bit much, I'd expect to see that tuned down slightly in a future patch, or they could decrease the rate at which charge builds so it's not up pretty much all the time.
right now I can unleash a rapid stream of fireballs and have clear-casting activate before my mana gets below about 75%, then regen to full before it runs out. I mean, it's awesome, but I can't help but think that it's a bit excessive.