Well, if the issue is that you want the camera point of view from Match Photo, but without seeing anything of the photo, I’m with @DaveR. It’s standard operating procedure for me to want it both ways, so I save at least one Style with Match Photo turned on and at least one Style with Match Photo turned off. When I composite a model into a photo, I want to do it in Photoshop, so I want to export just the SU model without any of the photo to use as one layer in PS while bringing the photo in as another layer (or two actually) directly in PS without passing through SU. That’s why I often duplicate Match Photo scenes and save them with different styles, one with photo on, one with photo off.
That said, Match Photo scenes are a bit sticky to work with. I’m not getting the other tricks to work, really. Any time a new is created after being in a Match Photo scene, it inherits Match Photo behavior. The only saved scenes in this file are Match Photo scenes, and it seems it is now impossible to create any new regular, non-Match Photo scenes. That’s a really odd corner to be backed into.