You can't apply multiple styles in a single scene in SketchUp but it wouldn't be difficult to combine different image exports using different styles in an image editor. In fact I do that quite frequently.
There were three or four different styles used for this image if you count the shadows as a style.
http://farm8.staticflickr.com/7025/6743292439_e1e53c5165.jpg
Four different styles on this one, too.
http://farm6.staticflickr.com/5022/5601922220_e0c573092b.jpg