Hello,
I have posted my integration of KrakatorSR and Softimage on github for those who might be interested in using it or contributing: https://github.com/jamesvecore/KrakatoaForSoftimage.
I have also posted a Partio based particle exporter for Softimage which can export .prt files along with other particle formats which has no dependencies on KrakatoaSR: https://github.com/jamesvecore/PartioExportForSoftimage
Thanks,
-James