"VC encompasses a broad range of choices and styles, all of which are VC unless they violate the basic principles and rules of the road that drivers generally follow all over the world.
Also, some of the VC rules are fairly rigid (like don't ride at night without lights), while others are suggested best practices or techniques, the not using of which does not mean you're violating VC. For example, while it is VC to merge across one lane at a time, if you pull aside and wait for a gap, that's not necessarily not VC. "