Just to clarify, yes it is possible to downgrade to all-season square setup, that's what I was referring to in my first post. I call this a "downgrade" because we go from a staggered setup to a square setup and I prefer a staggered setup.
Also my understanding is that winter tires are NOT for snow, they are for cold weather. Different than snow tires. The rubber doesn't get as hard in cold temps. We get snow in Philly but it's plowed alright. We still have the cold temps.
I guess it's one of those things... There is no free lunch. It looks like it's hard to sell the staggered summer tires and I'm not surprised.