TBF Ive been using a lot of fixed cameras for my menu system and its not that hard to set up your cameras, have a script that sets their activation values and have each camera wait for it to be activated and use the entity cam command.
eg
:state=0,activated=2:entitycam
So when the entites activation value is set to 2 the camera switches to that entity, I use ww2 stock radios (brown) and the camera comes out the back on that, so position it, lock it in place, and boom, do that for the rest and just script the cameras to trigger as and when u like
so say the player walks out of this cams view, a trigger zone sets its activation back to 1 which resets the camera, and switches another cameras activation value to 2, so that camera then calls the entitycam command and becomes the active camera
it sounds complicated but its not really. and u can do it all for free
smoke em if you got em