Back when I was a 'press-out' practitioner, I would use a slightly muzzle high ready position so I could keep the front sight in my field of view, and would transition to the front sight as soon as I started my extension. Using a high-vis/HD style front sight helped with this immensely.
One advantage of the press out as a training technique (especially at the beginner to intermediate level) is that it doesn't require a highly developed index, as you are correcting the sight alignment throughout the process of extending the pistol. I found it works very well with DA/SA guns in particular (pretty sure it evolved from shooting such pistols), and I've seen Todd Green and Ernest Langdon use this technique at a very high level and speed.
Nevertheless, I moved from the press out to an index based draw some time ago, though I've yet to crack the code on consistent target focused shooting. Personally, I think a target focused technique requires an exceptionally developed index to execute, and a strong index - in my experience - requires a ton of practice and repetitions to develop. Being familiar with @
Gio's dry fire routine (and work ethic)...well, there's a huge amount of work behind that target focused technique.