Vector3d cannot be used anywhere

Why is there a Vector3d type but no possibilty to use it in i.e. GL.Vertex3() , GL.Color3() etc. ?
For example GL.Vertex3() can have 3 doubles (x,y,z) as arguments or a Vector3 but no Vector3d, so one has to do something like that:
Vector3d foo;
//some stuff
GL.Vertex3(foo.X, foo.Y, foo.Z);

same problem for Vector2d and GL.TexCoord2()

Is there a possible reason for that? Will it be fixed someday? Please don't tell me that i can use Vector3 instead of Vector3d because I won't for obvious number precision reasons (i.e. in physics-calculations standard floating point precision just won't do in some cases, so double precision is needed)

GL.Vertex3(foo.X, foo.Y, foo.Z); is just very inconvienient in contrast to GL.Vertex3(foo);

sorry for my english (it's not my native language)
and sorry if that problem was postet already (I tried to search first)

apart from that: OpenTK rocks! It made my "OpenGL-Programming-Life" much much easier and faster :)