Nope. I have worked my way through the
Fairbairn and Sykes book, with live fire, and suppose I absorbed what the authors intended. (And, yes, I can exceed the rather generous qual standard the book sets forth.) The authors say that half hip is good for three yards or so. Personally I feel that is an over-estimate. I would use it rather nearer to contact distance.
The trouble is that the firing azimuth is set by squaring up to the target, and by accurately positioning your arm so that the gun faces forward. It is quite possible to make errors in both. That leads to tolerance stacking and a rather vague and sloppy feeling about the whole business.
Elevation is not as critical if your goal is merely a torso hit, just anywhere, for torsos are higher than they are wide, but still dependent on muscle memory to point the gun.
A great many variables drop out of the equation if you can manage to get the gun up into your visual cone. Doing that is my preference if it can at all be arranged.
Some people are born hip shots.
Bill Jordan could hit aspirin tablets, firing from just above the holster. That, I would say,
indicates giftedness in the particular proprioceptive skills required to hip shoot well. Not everyone can do that--which is why people turned out to watch Jordan do it.