Shaped Steeks

Has anyone done a sweater using shaped steeks as described in the book Knitting in the Old Way? I wonder whether the sleeves would hang correctly and if there would be excess fabric under the arms? Basically the technique is to put 5% of the body stitches on hold under each arm before casting on the steek, and then do decreases just before and after each steek to bring the armhole in line with the shoulder, thus decreasing the excess drop of the drop shoulder. I've run the process through my mind, but haven't actually tried it yet.