I'm no hull designer, but I have worked on many ships with X-bow in the past decade and change, and anecdotally will claim that they feel much more comfortable

I'm no hull designer, but I have worked on many ships with X-bow in the past decade and change, and anecdotally will claim that they feel much more comfortable in rough seas - say, North Atlantic, winter conditions - than conventional designs. They provide for much gentler vessel movements. (Not gentler in the sense that those prone to seasickness will no longer be sick - but you will be able to get useful work done with an X-bow vessel in weather where you would be busy holding on for dear life in a conventional design. Incidentally, the Ulstein design workshop is located within walking distance of me as I write this.