I definitely don’t like a de-amplifying s/w as it approaches. Not usually the best for big snows, but on the other hand if we had that, it would be congrats Montreal and Ottawa.
The ridge near the Davis Straits certainly doesn’t move IMO, so it does act like a block. The 50/50 low does move out like Will said, but it does its job.
We may see some tucky solutions. I don’t buy 12z euro. Probably some solutions that scare people and then correct SE a tad. Will had mentioned that in text and I agree. It’s classic for that.