This is nothing more than the techniques Bill Jordan was teaching cops back in the 50s and 60s. He described what you describe right down to a T in No Second Place Winner. His technique included a smooth continuum from unsighted point shooting to full on aimed fire, ever increasing amount of sight focus as the distance increased.
He even shows a shooting stance that looks remarkably like modern isoceles, with a grip identical to what we use today but very slightly altered to fit a revolver.
The more things change the more they stay the same.