If so, what's the process?

What I'd like to do is Sync my Mac with iSync to the Lifedrive. Then from the Lifedrive sync to my Treo while on the road, leaving my Mac at home. Then when I get home, resync my Mac with the Lifedrive.

The main question is how to sync from a Lifedrive to 2 devices - Mac and Lifedrive.

Alternatively, it'd be nice to sync the Lifedrive with a Bluetooth phone - a subset of the calendar and addressbook entries.

Any ideas?