First off a bit of a confession. When I wrote that I'd given up on SOHO Organizer I didn't entirely mean it. I continued (and continue for that matter) to hold on to the sliver of hope that some day the company that produces it would see the error in their ways and would come out of the funk. However today, just before making a purchase of a different calendar product to replace Group Organizer I thought I'd check once more. And sure enough, the message that says they really care about getting a converter for old data is still there. Amazingly I still believe it just as much three months later as I did the first time I read it - which is to say not at all.
Maybe Google will soon be releasing a calendar or somebody will point out a great AJAX calendar that also syncs with the Treo650. maybe....