David Elsewhere has called his style a mix of styles, including liquiding. Waving isn't necessarily "liquiding" though it compliments the style rather well.
Let me put it this way: Waving can be called Liquiding, but just because you're a Waver doesn't mean you can be called a Liquid Dancer. I consider Wavers like Elsewhere and Waveomatic "Liquid Dancers" because of the flow with which they perform their waves, not because they wave. Also, Elsewhere's style is not limited to his waves and "liquid flow," he does a lot of different styles and fuses them together, switching between his more fluid style and his more robotic,popping style. So not everything you see by him is necessarily "Liquiding,"