According to tool description, “This tool is used to bind a character’s skin to its bones or muscles”. But, I'd like to use it with rigid sim to deform my hires geom. The rigid geom could be thought of as the bones. Any tricks to get this skin tool to work without bones? If not, how can I access the capture code and modify it to get this to work?

The capturing process occurs at Sop level. You can create a custom capture system by hand using the appropriate sops, Capture, Deform and Capture Regions sops.

perfect, thanks!

you've probably missed this
http://forums.odforce.net/index.php?/topic/11050-capture-geom-tool-only-works-with-bones/ [forums.odforce.net]