Has anyone tried slapchop painting for customs?

I only recently learned about slapchop* miniatures painting, and I'm wondering if anyone here has tried it on custom Transformers? I'm curious if it works on a larger scale or with the look of Transformers toys in general.
* the gist of it is to use black primer and gray/white drybrushing to build up contrast then layering thin paints on top, so you get color as well as built in highlighting.
* the gist of it is to use black primer and gray/white drybrushing to build up contrast then layering thin paints on top, so you get color as well as built in highlighting.