Its been weeks since I have been using Outlook 2007 with Lotus Domino. I love it. By far all the major functionalities are working without any problem. I did notice (so did my co-workers) that when somebody sends you a recurring meeting, you get the request multiple times. The easiest solution for this is to open Lotus Notes ( I know, I know.. lot of us hate to open it even once) and accept the meeting.
Have a great day!