I think this is completely original.. haven't seen it any where yet. (not the both hand part, but the both hand drawing two portrait video part)
One of my MOST difficult projects... at first i had the idea of just drawing with my left hand, i figured that would be challenging enough.. but then a friend jokingly suggested that I should use both hands at the same time..... a sane person would laugh it off...
And I'm pretty sure it would have been even harder if it wasn't for years of starcraft multitasking training.. except it is a little like playing two opponent on two different computer at same time, one mouse each hand, constantly switching attention, pretty tiring after a while but darn good exercise...
hope you guy enjoy this. (please watch in HQ with sound) Comment and rate on Youtube to help my video spread!