Just what was said on another message board. From what I understand, you can edit on the phone, but it won't go backwards to the google calender.

Let me play with it NOW that I've shot my mouth off

PS

Never mind............I got that to work too. When you add something to the phone, make sure you go to the bottom of the "add event" page and check your google (calDAV) calender too. Works going both directions, just have to refresh the google calender.

I like this thing