Was in the area and finally made my way to the local Volvo dealer.
The S90 is so much more impressive in person than on my laptop screen. This car has presence without screaming at you. Sum of all its unique details, it one of the most unique 3-box designs out there. It's sleek, understated, premium, and confident.
The interior, especially in Inscription trim, is just superb. That walnut inlay is probably one of most authentic looking wood trim this side of a Rolls or Bentley. While the matte wood in MB and Audi looks nice in pictures, in person, it has a plasticky feel. I felt like one of those guys in that Audi A8 intro videos where they are touching the car. (BTW, this is where I expect you guys to make "Hoffmeister_fan playing with wood" jokes here.) The only complaint I'd have is that the top portion of the dash could be a bit more nicer, but honestly I like it more than the current E-class or A6 (I haven't sat in the new G30 5er yet.). The touchscreen was rather intuitive and most things can be done via steering wheel control or voice control. And most other settings you're likely to do while stationary. Maybe Audi has the right idea with their new A8...hmmm. And those seats....
I think the only short-coming is that a lack of 6cyl or larger engine might cause some hesitation if not outright disapproval.
If I was in the market, I truly would not disount looking this car. Bravo, Volvo!