It appears there are a few hacks that allow one to sync a V3M with a Mac. In general phone vendors are foreclosing device sync to make money from online services...
Update 1/12/07: It's quirky, but the free ClockSkew plugin does seem to work. A few tips:
- After installing in /Library for an individual user, log off and then log in to get it working. If installing for all users restart.
- The "erase all data on client" iSync option doesn't work. The sync will fail with an error message like "connection lost". Merge works.
- Use iSync options to sync email, etc.