Mulit-calendar sync

G'day,

I realise you can only sync one calendar via gpilot with the Evolution 
Calendar conduit (although I currently have the timezone bug, so I can't 
sync any calendars, but anyway!).

I'm looking for a system to combine my 4 Evolution calendars into one. 
That's easy enough, because I can publish them all as ICS files then 
write something to combine them into one and add that back into 
Evolution as a web feed. However, that would only provide a download to 
the Palm, it wouldn't allow me to sync events from the Palm to the desktop.

Can anyone suggest any alternatives? Any Evolution hacks / plugins to 
import an ICS feed into another calendar? Any other clever tricks I 
haven't thought of?

All suggestions / feedback appreciated.

Cheers,


Callum.