So far this is not the way I am experiencing my new Scene-less Layout workflow. It’s early days with 2020 and I’m still learning the ins and outs of working without scenes and I don’t have it all figured out but so far things are going smoothly and if I’m herding cats then I’m herding them quickly and efficiently.
I am able to take a compleatly scenless sketchop model. Make a Layout file with it, make several viewports and pages. Change the camera position ,projection, and view (now a handy right click menu when a viewport is selected). I can set the style and other qualities for each viewport independently in Layout. All the viewports say “last saved sketchup view” because there are no scenes in the file there is no other scene to associate with. As long As I have chosen the camera position for each viewport by selecting a standard position (right click) or by opening the viewport, I can update the model reference until the cows come home. I can add geometry and that new geometry appears in the viewports, nothing else changes. Changes in the camera view or style in Sketchup do nothing to the layout file.
@Charevir I’ve been experimenting with tags in this no scene workflow, and as you guessed if you make a tag invisible in the sketchup file and save that file, then update the reference in Layout, the tag does disappear from the the viewport, BUT… only if you have never adjusted the tag options for that viewport in Layout. As far as I can tell so far it works similar to the camera position, that is if you have never manually adjusted the camera position of a viewport, it defaults to the saved version associated with the last saved view of the SU file. If you manually adjust the visibility of a tag from within layout, it appears to divorce the tag state from the SU file permanently. After adjusting the visibility of even one tag from within Layout, all tags for that viewport and scene are then controlled manually from Layout. I can turn all the tags off on a SU file so there is absolutely nothing on the screen, save the file, and Layout updates new geometry just fine with all tag states that I set in Layout persisting. All tag control stays in layout for that viewport unless you press reset, in which case it reverts to being tied to the last saved view.
Everybody can continue to use whatever workflow suits them best, and I can’t change on a dime either, I’ve been using scenes for years, that was the safe way to go. I’m still feeling my way through this very different way of working. But I’ve frankly been wishing and asking (begging) for this kind of control within Layout for awhile now and I’m excited to explore it. So far I see nothing preventing a scene-less workflow.