so the inverse of viewspace is worldspace?, does that mean worldspace position for the camera on the left hand coord axis?

If you were to create a 4x4 matrix representing the orientation and position of your camera, that would be the camera's "world matrix". Transforming any point by such a matrix would translate it from "local space" relative to the camera's position and orientation, to "world space". If you were to invert this matrix, you would get a matrix that does the opposite: it would transform world-space coordinates to local coordinates relative the camera (AKA view space). This would be your "view matrix".