Interesting application for Skalp. I might have to give it a try.
By the way, it isn't a good idea to to orbit or otherwise edit the camera position in the LayOut viewport. It results in breaking the link to the original scene in the SketchUp file. If you go back to SketchUp and make changes to that scene, the viewport will not get updated in LayOut. The proper workflow would be to orbit in SketchUp, update the scene, save the file and then update the reference in LO.