does it yeild as good results as my technique
I'd say yes.
(the car is clay, no its not mine hahahaha)
This a little blurb from a website on the subject of tooling clay properly.
"Finishing
Once you have a final form with all the details carved in- you will need to develop the clay surface for painting or to take molds from. There are several stages in developing the surface, each of which improve upon the last stage, almost like grades of sandpaper.
Finishers are similar to rakes with smooth edges. Used in a criss-cross motion across the clay surface, they smooth the imperfections left behind by the rakes.
Steels are the last tool to actually cut the clay. Quite simply, a steel is a sheet of Spring Steel which is available in many different gauges down to small fractions of a millimeter. Work your way down through the gauges until it is hardly removing any clay. Steels can be found in many shapes and sizes or you can make your own from a sheet of Shim stock steel to suit your job. Basic shim stock is available from good tool supply companies. In the US, McMaster-Carrs shim stock assortment- Part Number 9300K27 - .003 Feeler Gauge stock 2093A16 is recommended. You can download steel templates from Chavant
Slicks are the final tool to bring out the surface of the clay. Slicks are made from sheet Lexian (plastic) with polished edges to burnish the surface of the clay. Again they are available in many shapes and sizes to suit your model. It is possible, using slicks, to get a surface that you can see your face in."
The only thing different in that process to what I was taught is using slicks at the end, slicks are great for large smooth flat areas (like on car models) for smaller detailed parts, I use baby powder (stops the surface grabbing) a soft wide paint brush then rub with a soft cloth, but you need to rake it down before doing this, unless you're sculpting organic forms like skin textures
I am really interested in learning what you are explaining,
look at this forum
The FX lab you learn more there, about modelling and moulding, than anywhere I can think of.