I’ve done it- I will have spent a year with OpenSUSE Linux by January 2009. I bought a notebook before Christmas of 2007, fussed a bit with Vista, then proceeded to remove it and replace it with Suse Linux.
I soon needed Vista again, and I used GParted to set up for dual booting (the details of which I can post on request).
With Suse in the first half of the drive and Vista in the second, they coexist without any problem. When version 11.1 is released in a few days, I will burn the DVD iso to a disk and simply install the upgrade over the old system and enjoy it. Ah, if only love life was as smooth as my Suse experience.
So how was your first year, if you happen to be a Linux user?