I've been using syncevolution before on the N9, with good results. But.. even if Nokia is acting like Apple and Microsoft, by NOT supporting established, open protocols (for that, Nokia, you earned the unobstructed and exclusive view of my middle finger), the N9 has Buteo built-in. With a bit of fiddling with the XML-configuration it works very well for me. It now automatically, periodically syncs agenda and contacts with my memotoo-account.

I can't say I'd prefer SE over Buteo or vice versa. As mere user, I'm interested in the results. A configuration GUI, more features (proper SMS and bookmarks syncing, like the N95(!!) had), status overview etc. would be welcome.