Superiority of one vertex binding method?

Unity Engine
1

Is there any benefit to this:

BindChannels
{
	Bind "Vertex", vertex
	Bind "Color", color
}

as opposed to this?

// "Emission" can be replaced with any other Material Block property except Shininess.

ColorMaterial Emission
Lighting Off

It seems to me that they do the same thing, but the latter is a little nicer if you just need to use one UV set, because you don’t need to “manually” bind the UV map.

2

No difference. Use BindChannels when the required vertex data is not bound using other means. Using ColorMaterial automatically says “hey, I need vertex color”, so there’s no benefit in repeating the same info using BindChannels.