Growl for SMS only works if you have your computer live at some point. What about us road warriors that use OF on our laptops and iPhones? Doesn't work.
The mac version needs to have alerts like iCal does. There are actions that need to be completed by a time and need to have reminders. iPhone version needs to support push notifications in iPhone 3.0.
I'd like to see the Omni own up to say that they are going to do this. Otherwise, as much as I adore OF, I'm going to have to look at moving on to something else.
The way I've gotten around this is to kludge up an interface through Toodledo that can send SMS (or email) messages. Here's the AS that does that:
http://forums.omnigroup.com/showthread.php?t=12624
That said, it's a kludge but it does work.
J.