Yep... tried those types of solutions and they certainly did work. But... I found making sure Outlook was closed in both locations to be a pretty big hassle. eg. my desktop is in my office on a different floor from where I generally use my laptop. I just found myself often without being synced because of that limitation.
This one uses a seperate live-changes-only file that both Outlook copies sync from. It really is pretty cool. I also found an additional suprise... in Win7 even when in Sleep mode the sync takes place. It seems to be in sync all the time with no intervention on my part. I have nothing to do with this company at all but I am honestly kinda giddy over the thing and how convienient and useful it has been for me.