(C#) Switching between two cameras - one not appearing (noob)

Hi peeps :)

This is what I'm trying to get: - Start with playerCam enabled - Click an object - Switch to otherCam - Play AudioSource - Switch back to playerCam

This is what I'm getting: - We start with playerCam enabled - Clicking the object works - playerCam disables, but otherCam doesn't enable (or it doesn't show as the main camera in-game) - The AudioSource plays - playerCam enables

All debug messages appear too, including the ones for otherCam being enabled.

The script and audiosource is attached to the gameobject being clicked. I've connected the cameras to the public slots created in the editor.

Here's my code, and you're awesome:

     AudioSource narration05;
 
     public Camera playerCam;
     public Camera otherCam;
 
 
     // Use this for initialization
     void Start () {
 
         narration05 = GetComponent<AudioSource> ();
 
         playerCam.enabled = true;
         otherCam.enabled = false;
 
     }
 
     void Update(){
         if(Input.GetMouseButtonDown(0)){
         Debug.Log ("monitor clicked");
         StartCoroutine (MonitorCam());
         }
 
     }
 
     void SwapCam(){
         playerCam.enabled = !playerCam.enabled;
         otherCam.enabled = !otherCam.enabled;
         Debug.Log ("cameras swapped");
 
     }
 
     IEnumerator MonitorCam(){
         SwapCam ();
         yield return new WaitForSeconds (2f);
         narration05.Play ();
         yield return new WaitForSeconds (narration05.clip.length);
         SwapCam ();
 
     }
 }