Well, it's been a week.
It works as expected with the old Scalix 10 connector.
I tried the v11 connector and had a couple of sync problems with smart cache but nothing major. I will probably wait for the next connector before I upgrade all the users.
My only quibble is about SWA. It's slow like molasse in january, not what you'd expect from an IBM server with dual processors, 5Gb of RAM and a fast Raid 5 SCSI array.
SWA in v10 was much faster.