single finger to orbit two fingers to pan pinch to zoom and it can transfer 'scenes' from SketchUp
no way to control layer visibility or section cuts straight out of SU, but you can take it to an intermediate software and set some of those things up.
Sort of. Same software that exports the 3d PDF, but a different format. There is an app that you download to view them, linked to a DropBox folder. They come in as '.zim' files.