You know you want a drop bar bike that can handle a lot of different road surfaces so the wolverine makes sense. Sometimes when the road surfaces get really bad, flat bars are better so build up a craigslist bike for that purpose. Vintage mtbs are easy to find and can make fine winter bikes.
I have 2 vintage bikes set up for winter. One is a mtb I converted to drops (a 1988 specialized stumpjumper comp); I run 26 x 1.9 continental winter tires. I ride that bike a lot. The tires are really good for mixed snow/ice/pavement type conditions.
The other is an old b'stone with all rounder bars and I use studded tires.
What I'm trying to say is don't overthink this. Get the bike that does the primary job you want it do to (the wolverine) and keep an eye out for an old bike you can mod for those really crummy days when the wolverine might not quite work for you.
By the way, I have a Soma doublecross that came in orange. I love the bike; I'll bet you're really going to like the Wolverine.