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While the aggressive run may be relevant for a fresh-built engine started up the first time (note the genesis of the most common online how-to for that method), it is not right for a built engine.
Even if not dyno tested, the engines are fired up either after building or in the car, and run in a bit to seat the rings.
I prefer varied speed, with none higher than 3/4 throttle and 55 MPH and 30-75% of max RPM for the first 1000 or so miles. I also like to do sime initial accelerations and then closed throttle coasting from a decent speed/rpm. This helps put a high level of vacuum in the system and helps seat the rings further.
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