The switchcamera command is actually pretty straight forward. I was able to use them with no problem.
The only hang up I had is figuring out that you have to terminate your other cameras first.
For those who don't want to download a tutorial, here is a sample snippet that switches from a normal cutscene camera to the first person of a soldier view smoothly:
;//_camera code goes above here
;//Fade out to black before making the switch
titlecut["","black out",0.1]
~0.11
;//terminate "_camera"
_camera cameraEffect ["terminate","back"]
_camera camCommit 0
;//Switch camera view to "enemydude's" view
enemydude switchcamera "internal"
;;//fade back in
titlecut["","black in",0.1]
I suppose when you want to switch back to YOUR view, you would just do:
player switchcamera "internal"