thats the technique I use. tbh it doesnt matter where the toolpost is, but you should always go for the shortest overhang of the tool, so running it square gives you that. You will notice in the video that there is still a rake on the tool, its not flat to the work, there is a nose that cuts and it'll have been honed slightly round to get a good finish... As a general rule I keep my toolpost square to the work and ensure the tool tip is correctly angled on all sides, but then I use HSS tools not premanufactured carbide ones.