The good news is that this monitor would probably work with new nvidia drivers that allow freesync. At least one user on Reddit says it works perfectly.
https://www.reddit.com/r/nvidia/comments/ahbovj/high_refresh_rate_freesync_ultrawide_compatability/eee42kt
Although I'd buy it elsewhere, it goes for $400 fairly frequently at the likes of BhP and Newegg. With the history of delayed shipping on this monitor at MD, chances are good for that deal coming up again.