[Geoserver-users] gs:contour - could it be made to work with tiles?

I have image I would like to use dynamic contouring on since it would seem I could use rules to produce different contours at different zoom levels. However, the image crosses the 180 line so I must using tiling. I can live with contour lines that dont join up on the 180 but can it work with tiled output? Can it work with image mozaic? (seems to only work with raster from docs). Other possibilities might be split on 180, create two layers, then make a layer group from them?? I rather like the image mozaic approach as I have more blank space than data though. It could also easily blow the 4GB limit as more data become available.

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