Not too crazy about the FileMaker Pro solutions just yet.

Maybe John and Sheila can reboot and just come out with a contact solution? I mean it would be a waste to lose their work to the sands of time. Leave the calendar to BusyCal but create a Now Contact revision. This is probably the only block left for me to try to tidy up. I'm happy enough with BusyCal for my calendar and simple tasks.

Simplifying and refocusing their efforts might pay off better. They already have syncing. Then just use Applescript and/or Apple Sync Services to link tasks/events somehow.

But I think I would leave the Now brand and restart from scratch. The Now Software brand has lots a lot of its polish with the end of Now X.