Got in another 10 miles today. Went through the back alleys, parking lots, and one of roads into the Lakeshore looking for ice. Rode all the iciest lines I could fine. The car wash parking lot was helpful, and the road in the Lakeshore had a modest downhill section with ice that let me kick it into high gear.
Complete confidence in the tires. I say that modulo the idea of still being watchful for ruts and careful about loose slush on top of packed snow. The tires inspire confidence.
I weigh 190, and I'm running the tires at 25/30 psi front/back. That's with tubes. I believe I can get away with 20/30, and might try 25/35 as well. The 5 psi spread that I'm currently running didn't seem enough to even out the tire sag.
Here a couple shots of the parking lot ice....
IMG_20180121_152434_727 (Small).jpg IMG_20180121_152204_887 (Small).jpg