Been riding this bike all afternoon and tonight. Can't get enough! Loving it! This one must have been sprinkled with pixie dust, because the things I thought I was going to have to address mostly don't exist with this one.
Seat: Breaking in nicely! Yamaha must be using something different in the seat, because I haven't even thought about squirming around. If there is still a forward slope to it, I haven't noticed it.
Windshield: Tested different configurations, seat hi/low, windshield in all four positions, still getting buffeting. Decided to remove the 15L Givi tank bag - solved! I don't know how a tank bag sitting behind the windscreen affects air flow, but when I removed it, it sure was quieter in the cockpit and smooth around the helmet. Did all my testing in calm air, light traffic on a divided 4 lane. <Edit: tested again a few days later; put Givi tank bag on, took it off, difference was minimal, undecided about this, will do a few more test runs>. With my Ear Peace earplugs it's totally livable.
I will now have the spare coin to get the Yamaha heated grips. Even though I have WarmnSafe heated gloves, heated grips are nice for cool summer evenings when the winter gear is still in the closet.
I rode in the dark tonight to test the headlights, they are great! Low beams throw a nice wide swath. The new Kawasaki Versus 1000 SE LT has cornering lights, not needed on the S10.
Non ES suspension is great! A local county road I travel frequently is fairly rough. I can ride it faster and more comfortably on my S10 than I could on the FZ-09. I know, apples and oranges, but still.