1. I guessed there was something like that. Nevertheless my previous plugin for iSync used a workaround against that limitation : addresses were transferred as generic "notes" for each contact.

2. I'm sorry, I took a look again at the iCal pane and I don't see any option allowing to choose which calendar will be synced. There is no "Sync only selected calendars" in the drop down menu as described in the online help. It's not a problem for me if all the events on the mac are stored in one generic calendar on the phone. The problem is that I've subscribed to several calendars from friends and coworkers on iCal, but I don't need to sync them on the phone. Well at least it was possible to do something like this with iSync.

I will try to contact the support team.