Seems to me this makes it easier. In the small time between the trigger becoming accessible - 'drawn,' and the muzzle itself becoming visible (upon which to make a 10.5.2 call), the holster's muzzle line controls. Once the muzzle itself clears kydex and is visible, 10.5.2 takes over.
10.5.6 grants a safe harbor of 3 ft while facing downrange, which is defined as the exact opposite of facing uprange. My reading would be if you aren't facing exactly down range, there is no 3ft radius safe harbor. Break 180, you're done.